Well most of the internet has been. I think it's basically the same dynamic, though it ended up there in a different way.

I left a bit out in that useful idiots sometimes become true believers (more or less*), which is something you see more often with old-style forums. That's at least something I've seen on Doom forums. That said, it's been ages since I've been a regular at ZD and ZU, and while they've definitely become prog hazard zones, I have no idea if it was the result of new blood coming in, or old blood being radicalized. My suspicion is that ZU is run by true believers, and ZD by wannabe-celebrities, but that's just from a glance and decade-old impressions. Whatever the case, none of those sites had any immunity to progification. The conditions for it were always there, whether it be weak-willed leaders or narcissists looking to wield the prog beast as a weapon.

• I say useful idiots become true believers, but it's more the case that progressivism is just more extreme than it was, while the progs themselves stayed wherever they were relative to either socially-acceptable extreme. So, what's actually happening is that 2000 "moderate progs" became 2020 "moderate progs," but that the definition of "moderate prog" has changed from somebody who is mildly concerned about black neighborhoods to somebody who may not want to round up belligerent white conservatives and put them in camps themselves, but would cheer it on if somebody else did.