Traditional game which is popular in one or few specific countries only is hard to find in global online casino especially in crypto world because it will not be profitable for the casino to provide such game if the players come from few countries only. Coming up to the game you are referring to, it is the first time I heard about it. I've been in this online gambling since more than 10 years ago (both fiat and crypto) but I have never seen/heard any casino provide this game.
These card games might be regional,but that doesn't mean that no one else in the world can't learn the rules and play such games.
The problem is that online casinos are focused towards being as convenient as possible for the gamblers.
This means that no online casino is going to bother launching new games,that have rules,which most of the gamblers aren't familiar with.Most of the gamblers are usually pretty lazy people,so they won't bother learning new game rules as well.They are going to stick with the simple and well known games.
Anyway,having new card games might be a breath of fresh air in the gambling industry.I got bored of poker games.