I see a lot of new casinos are currently opening
Yeah, I also noticed that and there's something tickles in my mind why it's like they're doing it at the same time.
and then they only support virtually unknown tokens.

It is almost as if these casinos are created to create a use case for these tokens.

Those that have currently launched and already had their own token. I think that it's too early for them to have it because there's a lot of it that's existing but anyway, it's only for specific casinos where it's been made.
Btw, welcome to the forum @OP @hunnyplay.
And there were a lot of questions thrown to you, I hope that you'll give some insights and clarifications with those questions.