Serious talk: How did mainstream gaming spaces become alt-right?

I've been a "gamer" since only about 5 years ago, so forgive my lack of experience. I don't really know how it was before, but it couldn't have been that bad.

Ever since I've started browsing through gaming content, I've been bombarded with alt-right and right-adjacent talking points. I'm a trans dude, so these never really jelled with me and I skipped over them. But being friends with other people who like games, I couldn't help but notice the shift in the mainstream. My friends and family members, mostly white dudes, who were okay with me and other queers before, now seem to spew out anti-woke and anti-progressive things all the time as a matter of fact. It's really worrying and I don't really know where to start with addressing this issue, which brought me to this question - how did mainstream gaming spaces become so alt-right in the first place? Much of the creators are queers or progressive (funny how making art seems to be joined with that), but the audience is... something else. I know about the alt-right pipeline concept, but with mainstream figures openly talking about alt-right concepts and radicalizing, I don't know if that really covers it all.

Further, how do we even begin addressing that? I know there's going to be shitheads everywhere, but the whole reason this sub exist is because it became very mainstream and very overt. How can we re-radicalize the mainstream?