The biggest advantage of gambling with Bitcoin is that it is private and tax free. The government cannot benefit from your money. However, the biggest disadvantage is; its value is constantly changing. You must calculate the amount you use according to at least 3% variability. Otherwise, you may lose a little while trying to make a profit.
It's no longer private when you have created an account with your real IP address and moreover you had giving your KYC.
It's no longer tax free when the government cooperate with the casino.
The volatility is the advantages why many people invest on Bitcoin, if you hate volatility then crypto space isn't for you.