If you wear the signature of any casino on the forum that has proven themselves to be serious about their reputation, have you ever made the effort to recommend them to someone outside the forum who is a gambler and has knowledge about cryptocurrency but has never tried using cryptocurrency to gamble?
I have never met anyone who is
1) a gambler
2) knows about crypto;
3) doesn't use crypto to gamble
I have even known people who are gamblers and immediately started using crypto as soon as they discover it just to use it for gambling. Gamblers understand the benefits of cryptocurrency especially when it comes to online gambling. Online gambling using cryptocurrency is not as uncommon that I don't really need to go around recommending it to many people outside of the online community. Most likely if they are aware of crypto already, they would be aware of using it to gamble.
It seems like you've encountered a situation where gamblers who already understand cryptocurrency quickly realize the benefits of using it for online gambling. Given that most of the people you know who gamble are already aware of crypto's advantages, you don't feel the need to actively recommend it. It's a natural progression for those familiar with crypto to use it for gambling without much persuasion.