There are other platforms, like Vimeo or Dailymotion, why aren't people uploading there? Because there's no audience and Youtube is so widely integrated (iOS, Android, Smart TVs etc).

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'.