This broad dynamic isn't new and it isn't unique either to gaming or to men. Every single creative volunteer community on the net is filled with assholes and drama llamas, of any and all genders. It's just the nature of the thing. You see the same things over and over with game modding, cracking, romhacking, emulation, manga scanlation, anime fansubbing, vocaloid production, mmd modeling, fanfic, fanart, and so on and on.

People often (generally?) are willing to invest the time and energy into whatever it is that they're going to post online at least in large part because they crave the attention they hope it will bring, and specifically, they want to be lauded for their talent and skill.

And that often runs up against the fact that an awful lot of the responses they're going to get are going to come from self-absorbed and entitled assholes bitching because they don't like whatever it is that they're getting for free, and think they have to be accommodated.

And very often, the response from the creator, unsurprisingly really, is to effectively (or even literally) say, "Fine then - fuck you all. I'm done."

And 'round and 'round it goes, and has from the start, and likely will never stop. It's just an unfortunate but pretty much inevitable clash between a personality type that's likely to create and share something online for free and a personality type that's likely to comment on something somebody else created and shared with them for free.