Many places traditional gambling is banned, so yes you can’t directly deposit through FIAT in those platforms and hence you can’t gamble there. Now in this types of situations, Bitcoins come to rescue us. Due to the decentralised nature of the coin, you get the full advantage to remain anonymous. Though gambling is banned in your country, but no one can really figure it out that you are betting with Bitcoins. Moreover sportsbook with crypto helps you to bet on different international events against various players from all around the globe. So yes these are the prominent advantages we get from a Sportsbook that accepts crypto.
just make sure they are not requiring kyc at any point of your active betting. because some casinos and bookies won't ask kyc when you deposit but upon withdrawal, they will require you to submit kyc. so always check their ToS before it is too late.