I disagree. It's possible to withdraw amounts from many crypto gambling sites(Licensed ones) without submitting any form of KYC unless the team finds something shady which I already mentioned in my earlier posts.
I agree with you and you are right at the first stage but all time you will be right that is not true. I use a gambling site (bitsler) from several years and they never asked me any kyc and they provided me telegram support. But while I have win few days ago they asked me to verify kyc and after verification they reduced my bet limit on cricket. So, those site which you are using obviously will do the same if you win any big amount. Also they may decrease your bet limit.
Reducing the limit is still possible though not all site will implement this one since KYC doesn't asked for any proof of income and I've been dealing with some site already with KYC so far they didn't reduce my limit. If you're into Roobet, you can just ask their support for the reason and if you are betting big maybe you can also request for the limit increase, KYC is a thing now almost the top site are already asking for this, regulations push them to ask KYC.