Stake does not work with this register sadly. In my opinion Stake really has to tighten their responsibile gambling. Maybe perform KYC checks upon depositing instead of letting them play and on a big win start asking for KYC.
You can't compare a crypto casino to regular fiat-based platforms who adhere to strict regulations. People involved with crypto don't want strict control. They especially don't want to undergo KYC. Requiring KYC after a big win is an excuse that many platforms use unfortunately. But again, due to a lack of regulation, that has become a normal thing in this space.
You are right, they are just using it to scam their players that's why it's not advisable to gamble a huge amount of money in crypto casinos especially those that are not regulated as if they will claim you cheated, it's easy for them to deny you your winnings and you cannot go after them.