If they actually have age divided portions of their platform, where adults are free to make adult content such as history, reviews of hentai, and so forth, I am all for it. Youtube sucks because it doesn't treat the audience or creators as adults, and often changes the rules at the drop of a hat.
Personally, I am guessing it will fall to Peertube and other fediverse platforms to offer genuine freedom for people, but I wouldn't complain if Bili breaks the camel's back known as Youtube.