I have no issue opening up to other men, so long as they're receptive, but very often (almost universally) I've ended up regretting it when I have done so.

I try to do that, but somehow it's magnitudes harder to talk to men and I can't figure out why. I'm probably already more open about how I feel than most men (at least in part because of the communities I chose to be part of, therapies, age, ...), but opening up to women (or non-binary persons) feels way more natural and easy for me and I don't even know if that's because other men's reaction to these topics are somehow subtly different (even with men who are also rather open) or because of some inhibitions on my behalf (e.g. not feeling safe around them because of bad experiences or because of an absent father figure or...).

It is melodramatic. He's writing as an outsider who doesn't know yet how to interact as a man, and may or may not have full male hormonal balance yet. Men form deep relationships with their male friends, but only on a long enough timeline for trust to be built, and then we display it differently. His perspective is that of a woman's, so he's probably missing a lot of nuance in reactions he's getting. Something as simple as a knowing nod can mean a lot between men. Just because we're not all lovie dovey, and hugging and kissing, doesn't mean we're broken, it means we're men, with male mannerisms, male emotions, and male forms of bonding.

So i guess, to any guys that read this and felt like it could have been written about them: go out on a limb and talk to your friends

Friends? What are these friends you speak of?