First thing to do by certain individual to check if a casino will require KYC or not so that you still have a time to think about if you want to continue to play or not. Saying about you didn't know about implementation is dumb reason because it will not gain anything especially if casino have written rules about this option.
But sadly, there are still people who don't want to read the written rules of the casino, and when they run into a problem, they start complaining to the casino, saying that they didn't know that it was in the casino rules.
And it's best not to make a decision to play in a new casino too quickly, especially if you haven't been able to find judgment from people. Perhaps, if the team from the casino launches the casino on this forum, you can find a review from members here to find out if the casino can be used as a suitable place to play or if you still play at the old casino.
Usually, those who are in a hurry and do not read the rules of using the casino and do not check its reputation lose their money and they lose money more often than those who carefully explore the casino and its rules before starting to play it.