Another advantage of using Bitcoin for gambling is that it allows for more anonymity than traditional payment methods. This can be especially important for gamblers who wish to keep their gambling activities private.
Unfortunately, the anonymity of gambling using crypto is something that can no longer be guaranteed in today's days.
For most players who always lose everything (like me) or who play small amounts every month, they will never need to go through a KYC.
However, in virtually all online casinos, even those that operate with crypto, you will need to perform KYC if you are a regular player who bets large sums or if you need to make a large withdrawal of money/cryptos.
But even so, I agree with you.... gambling using cryptos is still more advantageous than the traditional ones that operate with Fiat.