I think it's three things:
- since he tried to cling with whatever little bit of "gaming industry" relevance he had, he let the whole feminism/racism etc angle blow up to follow along the "evolution" of most gaming sites.
- it probably didn't help that he fucked off on world tours, leaving a few mods decide what the site's moderation would be like.
- since he had a couple of skeletons in his closet (revenge porn and that ass-grabbing story), letting the site go in this direction was probably a way to avoid it blowing up in his face.
But yeah, I don't believe for a second that the way his forum evolved in the last couple of years is in any way representative of his views.