As someone who's played online games quite a lot I find the notion that gamers don't welcome women ridiculous. More often then not there's plenty of guys who will go out of their way to be nice to women and who will defend their actions at every turn. Many women are in fact put on a pedestal and treated like special snowflakes, some women don't care about it, others don't like that and other abuse that. Welcome to online gaming 101 and this ain't recent, we can go back to the early 2000s for this.
The argument that there's certain toxic environments for women is a load a horseshit. There are toxic communities absolutely, but the argument that only women are treated badly is BS. People will use everything against you if they want to insult you for various reasons: Your nationality, your age, your race, your religion, your voice, your gender etc. and there's plenty of insults going around in games like League of Legends, World of Warcraft, Dota and many others.
More often then not the reason behind these insults is bad play: No one wants to lose a 30 min match in Dota because of some cretin who won't listen to the directions of more capable players and is playing like absolute shit. ( Which incidentally is why the Russians are absolutely reviled in that game because they do this a lot ). No one wants to spend hours in a raid in World of Warcraft for the same reason and it goes on.