I really dont know what answer you expect on that. It’s no secret that the vast majority of creators only upload their videos on YouTube. Should they mirror them on something like Peertube? Well, yeah, but this is not in your control.
It's a simple question, but I guess you just proved my point here. It was your claim, that there are exclusive content on YT, that you can't find anywhere else. A claim that didn't hold.
Tell me, why do you expect an answer, when you refuse to give one? I don't have to block every domain to not use a service. Are you really that clueless?
Next you'll be saying that I use google, when I read a document someone wrote in Google Docs, right? 🙃