What is a lot? 50% of all videos? 10%? 1%? 0.001%? Compare the share of copyright violations on YouTube vs Plex and it will be apparent what each service is really used for.
I just looked for three movies off the top of my head, 'xyz full movie' filtered for > 20 minutes
Every one of them was available on the first page of results!
Non-exhaustive, sure, but plenty of people use YouTube for piracy
Not really here to beat a horse, I think we're way off course. This is probably not that bad of a move, Hetzner auction servers are a major piracy hive.