Why community points are not in more than 2 sub?

I was reading Reddit vault page

Each subreddit creates its own Community Points token, with a custom name and symbol.

Every subreddit's Community Points are unique to it, with a name chosen by the community and a symbol to match. These tokens live on the blockchain, which means they are owned and controlled fully by the community.

Well I didn't know that there was a wait-list and basically any sub can ad community points like Moons and Bricks, now my question is why no other sub has done it besides r/cc and r/FortNiteBR? is no other sub interested in crypto?