Stablecoins like the USDT are already being used in gambling platforms. The use of Bitcoin in gambling platforms can be risky because if the price of Bitcoin plummets at a point, everyone loses... Thus, Stablecoins which are more stable and less volatile as compared to Bitcoin, is being used instead
The main point is, when you are gambling your goal is to win, so price fluctuation should not be your main concern. That is why stablecoins are really good for gambling.
Not all gamblers are investors, so I think those two should be separated.
Serious gamblers can use stablecoins like USDT, although there is still a risk that it can be frozen.
But for me, since many casinos still don’t require KYC, I would still use Bitcoin for gambling. I just love the old-school way.