As a developer i can say this is true,only few pros i can imagine right now:
*Gambling is a risky job cause of the laws.Blockchain is more anonymous and it helps for this.
*You must be a company to use most of payment methods.Cryptocurrencies remove this.
*it is not in controll of someone,so you feel more secure.
etc...
Internet is a anonymous place and it's payment methods also should be.So i think blockchain tech is a good thing.Not for just gambling in every hand.
Ganbling is risky not just because of law but also people behind it. Not all gambling sites we thought that it's safe but the truth is that it's not safe at all that's why most gamblers find gambling sites and compare each to find the right gambling site to play, kill time or to gamble and also earn profit.