I don't understand why people are just taking it for granted that everyone's watching youtube.
I've watched maybe a video a month on youtube for the last decade. It's a noisy loud messy platform and I don't understand what people enjoy about it.
I watch Netflix a bit and at least the shows there are actual produced shows and not just some bullshit some teenager made up in their spare time. Even if a lot of them are still trash there's a much higher signal:noise ratio than on youtube.
So my solution is: just don't use youtube? And obviously use an ad blocker or piped.video if you do occasionally visit it.
Many people follow specific channels and only look at content from them, not random bullshit teenager videos that show up in the random/new/trending pages. If you only look at these contents, then yes, you're going to get those bullshit annoying videos.
It's the same with Reddit, Lemmy, and others, people follow the specific channels they want and avoid the trending/random/new stuff.
For an example, I follow Digital Foundry channel for their detailed analysis/reviews, The SciShow, Sorted Foods, and so on. I click my subscriptions on youtube and it only shows these high quality content for me. Our family spend hours on these contents. They're not available anywhere else.