Oh I’m not saying a female player is common, all I’m saying is that people don’t treat them poorly. I have played with a girlfriend a couple of years ago and we had zero poor interactions. There are toxic people but they are toxic towards everyone. Nothing specific to female players.
I think this is the main reason. Without googling anything I’d say the average age of a dota 2 player is at least 19 (if not more) compared to 14-15 for other games.