I've seen leftist YouTubers clearly affected by /pol/ false-flagging campaigns, one channel having its videos removed in entirety because of the way that Google manages YouTube, either because of biased moderators or a kind of lackadaisical attitude on the part of YouTube, probably making the choice to play it safe and just go along with it anyway without even making the attempt to review the content. This sort of thing doesn't just simply apply to conservative vloggers.
This, of course, stems from a general attitude that YouTube has had over the years, making choices that piss off either the user base, content creators, or both out of a desire probably to save themselves from something that could potentially bite them in the ass later, which of course corresponds with a hostile culture between YouTube and the end user in which the former tends not to be open about the way that their policies are carried out at all.