The only advantage is the true essence of crypto: It's borderless and can't be controlled. So you can bet from anywhere without being afraid to lost your money.
But it has some disadvantages too, of course: with crypto betting is much more easier for books to block you and steal your money.
tradeoffs
we always have to remember that there are risks when sending crypto to wallets you don't control the keys (like any online casino)
but you can probably trust the most famous ones and the ones who are advertising here on bitcointalk for years now.
its is understandable that you would or should stick out on reputable ones to make yourself get involved with less risk but speaking with betting or gambling activity itself then risk would really be just
the same or odds on making profits.Crypto and Fiat betting does have difference with just simply basing with centralized and being decentralized.