I guess it could be useful. I mean, every one of us understands how cryptos are very volatile, and letting them sit on my casino account when I'm not even using it could pose potential problems when price changes happen. Sure, changes may happen positively, but as there is two sides of the coin, the same could be said for negative changes. In the end, stable coins are there to ensure that my funds inside my gambling account don't change due to volatility.
It could be beneficial but aren't USDT centralized? wouldn't that defeat wanting to gamble anonymously or without a central authority? although I understand gamblers wanting to gamble without worrying that their money would suddenly decrease its value but if they want to gamble without worrying about it why not just gamble on a fiat-based casino? wouldn't that be almost the same thing?
People gamble in the crypto-casinos cause of it providing speed and anonymity, compared to fiat casinos. The fact that credit card information is revealed whenever you gamble in fiat casinos has been a pain since long ago after all. Besides, stable coins still retain their anonymity. Stable coins are still cryptocurrency, they still act the same in providing anonymity.