You can see Dirac himself speak (https://www.youtube.com/watch?v=ma7TSAq87lg), Feynman (https://www.youtube.com/watch?v=j3mhkYbznBk), Jung(https://www.youtube.com/watch?v=bs3HK3pxVAY), Minsky, McCarthy, Ellul, Ram Dass, Jiddu Krishnamurti, Terence McKenna and Alan Watts and many many more people who greatly influenced our understanding and way of life
Youtube is quickly turning worse, just as google, with the flood of click baity content, and not only them, look at cnn.com or foxnews.com you will see every single article is with click bait title.
I dont think the issue is in the dislike button, I think they have to up their game to help you navigate the sea of garbage to find some islands of good content.
The reddit rule of 90/9/1% is no longer true (90% of community members are lurkers who read or observe, but don't contribute. 9% of community members edit or respond to content but don't create content of their own) now it seems we are more to 20/30/50% (my intuition), and the tooling and understanding used to decide what content to create and game the system has improved a lot. Like in video games, the way people play videogames now is fundamentally different than 5 years ago, now you are expected to minmax your character, items, gameplay etc because there are so many tools and guides out there to help you, but the same happens with content creation.
Its a different world now, and the algorithms have not caught up yet.