But that implies you don't even exchange volatile cryptos for stable cryptos in order to then deposit them at casinos? Or am I getting your post wrong?
Because then it doesn't matter what step you take first and whether you even convert it or not. When you lose money gambling you could also be angry at yourself because you could have taken that money and buy more Bitcoin.
But even when you convert Bitcoin into stable cryptocurrencies, it could out of luck turn out to be the right action if the price drops while you are gambling with it and perhaps even make a little profit.
I think eventually it is basically about the decision whether to gamble or not and what the budget should be. It could go both ways, but sticking to constantly buying Bitcoin with funds you might have lost gambling otherwise is never a wrong plan. Rather some additional Bitcoin than some potentially lost stable cryptocurrencies lost.