As far as I know, there are casinos here in crypto gambling that announce that they do not have KYC for their future players on their gambling website platform, but when a withdrawal of a large amount comes, other casinos suddenly break or destroy what they first announced, that's why gambler is suddenly making accusations against the casino platform.
But there are other casinos that immediately say that you need to submit a kyc, which for me is okay because at least they are transparent and don't hide anything from their future clients. And in this style of casino it has a good impact at least I think.
This happens because a few casinos act in bad faith.
I never needed to withdraw large amounts from a casino, in fact I don't remember when was the last time I withdraw something from a casino, as I usually spend everything I deposit.
Anyway, what happens in some cases is that the T&C deceives users by saying that they do not require KYC, but they say that the casino can adopt security measures when it detects suspicious activities or that deviate from the standard, which involves the request and sending of documents user evidence, that is... carry out the KYC, but in "other words"
As much as it is essential to read and understand the T&C, I myself have never been able to fully understand them on the sites I frequent, either because they are extensive or because they have too much technical language.
The best solution is to always bet on reliable and reputable casinos, so that when the need arises you can have adequate user support or come and complain here at BitcoinTalk.