Based on the other thread it is said that those casinos which are regulated doesn't need to require KYCs for this. They will continue to do the same except for the new thing which is proving themselves within having a loss of $100 or maybe £100. I don't think it would be that big for them to gamble underground.
I think they have to require KYC during the registration if the £100 monthly losses gets implemented because casinos can't just guess or assume which of their gamblers aren't capable of handling the losses. Anyway even if it's approved this won't be a problem to most of us crypto gamblers since it's only from the UK while most crypto casinos are regulated by Curacao.