Graham Platner has generated a lot of press coverage because his evolution as a person has been preserved in digital media over a span of many years. By all appearances, he has refined his beliefs and behavior since he separated from military service and the particular model of masculinity that culture tends to cultivate.
All-male organizations orient themselves around dick-measuring and pissing contests. They certainly don't reward sensitivity. Vulnerability is something that you hide while you try to eradicate it in yourself. In the day to day you have to get along where the discourse is frequently dominated by the most coarse and assertive assholes in the group.
The armed forces ceased to be all male in the latter part of the 20th century, but male dominance permeates them anyway. The women who serve hold their places not by the respect that the hierarchy has developed for their unique perspective, but by being able to push back in the long established format.
In a volunteer force, applicants are likely to be athletic types who feel confident of their ability to fight if necessary. Some of them even look forward to it. Much of the organization serves in support roles essential to keep a fighting force in the field, but everyone picks up a rifle and marches at some point in their training. The job is to kill when required. Serving even as support personnel in some bases puts you at risk of enemy action, as we've seen recently when Iran has struck US bases in retaliation for the Trump regime's foolish war. As a member of the armed forces, you are part of the nation's department of targeted violence. It is better to give than to receive, as they say. But some of it is bound to blow back. So there you are: in a culture of toughness where you have to be ready to match an opponent's brutality at least, and exert your own if so ordered.
PTSD happens when a participant's ability to withstand the broad array of negative aspects falls short of their expectations. Behavior adapts to cope in the culture and to deal with the after effects when you leave it.
Just attending an all-male prep school for a couple of years in the 1960s, and growing up in the 1960s and '70s in general imprinted a generic sexism on me that functioned in spite of my overlaid intellectual support for the rising power of women and the gradual recognition of differing sexualities. After that prep school I made a point to avoid boys' clubs like the military. Military service wasn't all that attractive to a cohort that had watched fathers and older brothers chewed up in the Vietnam War. I knew people -- mostly young men -- who embraced it. Hard to say whether they were really gung ho or just felt safe acting that way now that we had no large-scale conflicts going. Militarism fits well with macho cosplay.
After September 11, 2001, recruitment surged as an angry nation set out to make someone pay for bursting our bubble of perceived invulnerability. As the wars in Afghanistan and Iraq wore on, participants learned about their own personal ability to deal with the horrors that go with the job. As a multiple amputee British commando vacationing in Wolfeboro said when one of our shop staff offered sympathy over the loss of his legs, "It's just part of the job, I guess." He wheeled himself back out to his rented motor home and we saw him no more, but the flat matter-of-factness stuck with me. I have often wondered how much he really believed that and how much was just deflection to get people to stop talking about it.
High ideals will always conflict with low compliance. The best we can do is pick ideals that seem to advance the greater good, whatever the hell that is. If you say that a man is kind to women and animals, you've put women in the same category as animals, or at least subject to the whims of men. If you believe that society should be run by the strongest, you accept the hierarchy of physical violence. If you believe that society should be run by the richest because they're clearly the smartest, any staircase you leave in place for new players to climb has tall, fortified risers. Concentrated wealth defends itself. If you believe that "the people" should rule, you have to persuade huge numbers of them to agree to something and stick with it, over and over again.
On some level we all have known for decades that the stakes are high as we set our course for the future. The future keeps turning into the present, which makes it seem ordinary. A person's evolution doesn't come with chapter headings and episode titles. It might advance and retreat, and follow a curving path. Before social media and densely packed digital records of emails and chats, much of that exploration went undocumented, vaguely remembered if that, unless some incident was particularly intense to one or more witnesses. Even then, testimony depended on their recollection and whatever notes might survive. No one could be Googled. Hop in a time machine, bop back to 1983 and tell someone to just Google something.
The information environment we live in now is so completely normal to generations born into it that they have no concept of what life was like before. Even people who lived much of their lives in the time before have grown accustomed to the convenience. There it is again: we're led by our bias toward convenience. It is great in many ways. But it also makes us vulnerable. We have to learn how to deal with the flood of information that we can get about anyone who happens to become prominent for any reason. Those reasons grow more numerous with the wide access to global exposure. It can make you feel like you were born knowing everything. In seconds, you can find support or refutation for any point of view. Then you have to assess the validity of the new information.
At some point, in our representative democracy, we have to elect someone and give them the power that pertains to the office we have given them. We are currently suffering greatly under the abuse of power and gross incompetence among the majority of office holders and appointees. As suffering goes, it ain't shit compared to the parts of the world where we have allowed, neglected, or promoted suffering in order to support our own consumerist lifestyle, but morally we are wounded by the cruelty and greed that we have exalted over ourselves. It will only get worse if we do not place people in office, flawed though they may be, who are at least striving toward a more evolved society that cares for people and the planet.
Some people do appear to be almost perfect. Even deeper digging fails to disclose the buried skeletons of past evil. However, there aren't enough of them to field a baseball team, let alone run a government. We have to accept the rejects of perfect righteousness to find the majority of willing workers who try to be better people and make a better world. We have to trust that they are actually trying as hard as they say they are.