These "No-KYC" stuff, is always make complicated.
If in term & condition, you still request some identity can at least no need to use these things. I mean, people can be tricked thinking is without identity request & people who are always believe in "NO-KYC" stuff.
It could be the title of the No-KYC thread to attract the attention of users, or it could be misleading because when they win at the threshold of course the casino can request documents at any time, especially since this casino has a license at least there are regulations that must be met in case of problems.
But I assume if the casino says No-KYC then it's for small users, if there is a problem still in the end KYC will complete the verification.