1. Crypto casinos are not restricted by region. There are many countries where gambling is banned. But crypto casinos are open to those geographies where anyone from any part of the world can play and enjoy casino games from the comfort of their home.
Not anymore, nowadays there many crypto gambling sites are restricted for some region. Or maybe banned by countries where the gambler lives.
2. Not all crypto casinos require KYC docs to verify the identity of a player. That is one of the basic checks that any player can do before depositing money in to any crypto casino. There are exceptions as well but they are very few in numbers. So anonymity is a plus here!
I believe this is the most important thing for using crypto casino where we should not reveal our real identity.
3. Transactions are not slower. There are multiple crypto casinos available who allows people to play immediately after deposit of cryptocurrencies without even having 1 confirmation. Again an advantage over fiat casinos.
As per my experience in fiat gambling sites, deposit and withdrawal is faster than crypto casino but indeed there are some crypto casinos offers instant deposit and withdrawal. Not really an advantage over fiat casinos IMO, but it is obviously about preferences.
4. If you belong to a region where gambling is banned, you can take benefit of crypto casinos and you don't need to disclose that income unless you are exchanging a huge amount of money. Little risky but still counts as a benefit!
I'm belonging to such region, even if I use crypto casino but if I win big then I need to convert it to fiat money to be transferred in my bank account. It is disclosing my income, but indeed it is not a direct transaction from gambling sites to my bank account so it is safer.