Gay men have been the free-for-all punching bag of social media for quite a while. In the early and mid 2010s, articles about gay men being racist and gay men being misogynistics were all the jam. Accusations of transphobia came later on. Eventually the cis white gay man became this horrible privileged demon that was not only criticized by the right (for being gay), but also by the left (for being cis, white, gay and a man). That feeling of not being good enough for anyone and always being criticized has caused plenty of gay men to feel so inadequate about themselves that they react to their low self-esteem and (unfounded) guilt by doing stuff like this idiot. Though I don't know if this specific scenario fits him, as it's more of a teen/young adult kind of thing, so who knows what this guy's issue is.