The wording in the survey is really muddled and thus hard to take much real data from, but having said that, anecdotally it gets to about the right place I think. At least on the gender gap.
I see a lot of statistics thrown around that say theres no gender gap for gamers, but Ive long assumed the flaw in that claim is that anyone and everyone who plays any kind of game can be called a gamer. But I think its safe to say that most of us know theres a difference. Perhaps a better term would be gaming enthusiast. And when you get to that level, it really seems to be a male dominated affair. Yes women play games, but I truly believe less of them are actually enthusiastic about them, that follow industry news, play a variety of games, etc, compared to men. I see far less women really treat games as a primary hobby. Even my girlfriend could be called a gamer, she plays destiny and cod zombies, minecraft and even bioshock. But thats about it. She doesnt give one shit about industry news, she doesnt experiment with other genres or even spend much time playing the few games she does. She has no idea what most games even are. Shes not an enthusiast. She would have no reason to join this site. And its that enthusiasm and knowledge that a lot of us really connect to the term "gamer." Or at least I do. I think it loses its meaning otherwise and becomes as useless a label as "music fan" cause everyone listens to music but that doesnt mean you know or care much about the subject.
The gender gap has been slowly closing over the past decades for sure, but its still definitely there. Again though, I only speak anecdotally.
I guess I should just adapt and use the word enthusiast for now on though. Its probably much clear in definition to anyone who is outside that bubble.