I know from experience, you just have to be prepared at all times that when you withdraw funds, even small ones, you may suddenly be required to have a KYC. This is a common practice for many exchanges and casinos.
So keep that in mind.

You need to have that mindset, in case there're unexpected changes from the rules you are still good to go. We can't remove that from realities, there are gambling houses who do this kind of unnecessary action.
Some are accusing gamblers of having suspected unexplained practices or some movements from gambling account that the site is monitoring.
If you are always ready and expecting shit to happen, it's not easy to work on it and continue playing / using the platforms.