Content on YouTube is shaped by the incentives Google sets on the platform. So what we get, mostly, is junk that best sells ads, best gets clicks, eyes, attention etc. etc. Just like TV was before pay cable came along. Notice how TV got better when you just paid HBO to show you good shows? Paying Google to watch YouTube without ads is like paying ABC to watch The Bachelor without ads. The content is still trash.
I have found quality content. Notice how the people who work hard to make content outside YouTube's incentives need an external Patreon to fund their work? Why should I pay to fund the Mr. Beasts while the quality creators have to find funding outside the system? Also: I am sure you've seen it -- a creator you like or admire starts succumbing to the incentives, making sillier and sillier thumbnails or "experimenting" with shorter content. Of course there's great stuff on YouTube, but they exist on YouTube despite Google's best efforts to coarsen them.