I never heard any "crypto radio" before but I figured it would be quite useless. I mean crypto is a hectic world but there are two reasons why something like that wouldn't really work out well.

First is, radio is generally for music, even if there are shows where people talk and say funny stuff all those are presented with songs in between. It means a "crypto" radio will have to provide music too, which makes it not so crypto and quite mainstream type.

The second part is, if you try to make it like a 24 hour podcast of crypto stuff than you will run out of interesting stuff, you need to find interesting crypto personalities and make their shows and give them a time slot where everyone would love to listen. Also since crypto is global you can't really make it a global radio all at once neither, while some people listening the best show during prime time, it is early morning in another country.