I would change topic name to "Dogecoin and Shiba Inu feels perfect for crypto gambling". As they are only two I know that are popular enough and are used in gambling. Never seen other meme coin trash being accepted by crypto casinos. Imo, for casinos it does make much difference if meme coins are perfect for gambling or any other cryptocurrency. As long as altcoin is traded widely, is popular, has some background and a decent team, it can be accepted by casinos as bets.
All meme coins are basically trash and it was originally created without real use case or utilities. But the difference is, Doge and Shiba was being hyped up by so many influencers in gaming and financial industry. So, they made a value because people are patronising it. Well, nothing's really wrong with that, not until people starts pulling out their assets and abandon this coin. Bitcoin is still the most safe currency to use and all other well established alts with real use case are safer than these meme coins.
That's given in bitcoin Sir, and it's proven and tested. Now, these two that you mentioned are proven and tested in that they have established a lot of communities in the crypto space, and this is probably one of the reasons why most crypto casinos have adopted these two meme coins as one that can be compared in their gambling games.
Especially the Shiba Inu, I know some crypto gambling that gives at least 500-600 SHIB to its faucets which is still enough to match their gambling games.