But if another platform got to Youtube's size, it would have the exact same issues, with having a fragile automated system, and not enough human reviewers (too much content, humans are expensive and error prone).
There's no ideal or perfect system for monitoring audio/visual data, look at Reddit for example, I can ban you because I am bored, or I dislike you, or because I want to censor you.
What can you do about it? Nothing. Who cares? Nobody, Reddit carries on as usual.
r/videos mods can control which Youtubers get traffic, ironically enough. They can automod channels/posters away 'just for the lolz'.
Disagree, say you are a Patreon and also host the videos, games. If you wrongly block your users they move, if they move you lose money. If small youtubers have some videos removed YT won't lose as much since other videos will be pushed to the viewers, the issue is that YT loses a ton more money if they upset large publishers or some political party.