I think "cancer" is an understatement, Pillars of Eternity threads in particular have gone full reddit with newfags like
>>241 getting assmad if you aren't a liberal, calling everyone who disagrees with them /pol/ and trying to force the latest ebin meme of "if you disagree with SJWs, you're just as bad as they are".
It's almost certainly cuckchanners again, since this happened before, just a few months ago.