That problem is everywhere no matter what service you pay for. The root cause is copyright. Only abolishing copyright will solve that.
This is a problem on all of these platforms, but to a completely different degree.
Your favourite creator can post a video on Patreon, that you pay for, and immediately remove it.
Pointing the finger at YouTube like it's a unique problem is...
I'm comparing it with other platforms, which are usually announce removal beforehand. That's it.
I was never notified in advance before Netflix removed The Office UK or People Just Do Nothing? I was in the middle of both of these shows when they were removed.