Good will in combination with nostalgia. I'm having increasingly strong doubts YT is going to survive this decade though. I've already started archiving things I find interesting. When that feels done, I will reevaluate.
They had about a four or five day blip, but are back up and running. However, like anything else that doesn't use official APIs, it's a cat and mouse game.
Yes, to get Youtube content I can see your point. However, google don't respect your privacy or individuality, even if you pay for a premium service. That's why the alternate front ends exist.
https://github.com/yt-dlp/yt-dlp