It could be a part of regulation that hid under fine print and who wants to casino must follow all the regulations set by the government. And it can be a good thing to find our underaged gamblers who were common in online and using the bank accounts of their parents without even their knowledge and this verification can stop them.
But even most of the crypto casinos have now added a liveness test as part of their verification to tackle the people who use fake IDs or something they acquired from illegal sources will have a hard time getting verified.
The thing is that even if it’s a tactic to reduce underaged people from accessing gambling sites, we all know that it’s not going to be 100% effective because there are lots of other gambling sites on the internet that doesn’t even require you to verify your identity before you can start using them - if those people should learn that this whole selfie thing is a means to get them to leave gambling, they’ll simply just take their things and switch to a more friendly place.
It sure would remove those who are just starting out gambling newly, but for those who have managed to become addicted to it, it won’t work since that urge would drive them to look for a different means to access gambling.