I got the impression that it's fine for a man to "feel like a man" but that that needs to be something he finds on his own terms, and needs to come from within. It's not something he gets to impose upon others, such that it demands their cooperation or subordination. If to anyone, masculinity requires them being superior to others... maybe they need to do some soul searching.

Perhaps the user's name does contribute to a theme. I don't see anything specifically wrong with what was mentioned in this post, but we would need more context to determine who's in the wrong, Reddit AITA style.