If they ran less hostile ads, people wouldn't be as hostile to watching their ads. Some of the ads they run are just ridiculous and awful. Ads for scams, soft-core porn ads, just the worst of the worst.
I think that’s a rationalization. Most people just don’t like ads no matter what they are. And I can’t blame them, ads are terrible. But this is a case where they offer a nice subscription that takes them all away, so people ought to buy that instead.
I pay for YouTube Premium, but what I am afraid will happen is that once enough users opt to pay for the service, YouTube may pull an Amazon Prime and show ads, and then ask for more money to not see the ads.