I don’t think any registered casino platform would hide their policies from users, however, if they should ask for KYC Which was not originally part of their policies, then I think you should just go ahead to provide them with the details they’re requesting for.
sometimes they can twick the terms and conditions so that we may not have full understanding about what it entails. We just need to be more careful about casinos like that if we find something fishy that looks like we might not seems to understand the when details of what we have read. It is good to do our own diligence for a better choice.
or better yet, if you are confused with their statements under their terms, why not contact their technical support and clarify about your doubts?