I think gaming is too mainstream like television/movie viewers to lump it into some type of niche group/activity these days. Especially with the increased communication and connectivity that the internet provides that brings all sorts of wanted and unwanted people together.
I'm someone who enjoys gaming, and when I play games like The Finals these days I disable chat/voice because most people are assholes. Game previously didn't have chat and enabling that turned it from what felt like a wholesome community because I wasn't exposed to their thoughts to it breaking the illusion when they were able to express themselves.
I think this is more a more broad societal issue and a worrying one of being shown what people truly think. Even a minority is a huge amount when the population is billions, so a lot of damage can be done. Games is just another avenue they choose to be toxic in along side other vehicles provided to communicate their thoughts.