> It's generally terrible or controversial on current events or recent history.

Or any person with any kind of ideological charge, especially a boogeyman to some group or other.

The problem with Wikipedia is the fanatics with infinite time, which it accumulates because they're the ones who never give up. The other issue is it's inability to actually deal with problematic users, as the moderation doesn't teach the fanatics to be good, it just teaches them to not be so bad they'll be banned.