There actually is no "male lonelyness epidemic" or rather, the increasing lonelyness we see in our society that atomizes and alienates everybody, systematically destroys third spaces and tears apart communities has been shown to affect people regardless of gender. Other studies find that women are affected more often than men, even when you adjust for potential confounding factors like lower self-reporting among men and longer life expectancy in women. And when you look at the search results for this stuff, you may notice that the sources that confirm the idea of a male lonelyness epidemic range from chud-adjacent to outright manosphere propaganda.

What we see here instead is the concept that Klaus Theweleit described as "soldatic masculinity" in his main work Male Fantasies, which in spite of its psychodynamic Deleuzian bias continues to be a thorough takedown of the ideological intersection between patriarchy and fascist recruitment. And personally i think that's one of the most dangerous developments we're seeing at the moment, it's never a good thing when reactionary men get combat experience.