He does a lot of videos shitting on New York and thus has brought in a lot of right-wing people who hate the "liberal elites" who live there. I don't find his views too bad tbh but his comments sections are always a complete shit show. I wouldn't be surprised if he has changed for the worst due to audience capture.
Hmm I don't think there is a cutoff necessarily but it doesn't surprise me many people currently in their late 40s wouldn't be much into them. I'm a 37/F myself and most of my friends play video games, but then again I'm part of a crowd of childless nerdy types. I guess it all just depends on the type of person you're hanging out with and what their lifestyle is all about. Women who play video games and are currently in their late 40s probably live a more alternative lifestyle in general.