We all have reason why the terms and conditions of a gambling site should be read before registering or starting to play there. In addition to reason to avoid mistakes in using the site, we will also get an idea of whether the site is one of the site that meet the criteria we want. Some users are not suitable for KYC, usually in the terms and conditions we will get that information and we also avoid the site because of that.
So far, casinos that require KYC are very simple and fast. like just a formality.
Quick and easy doesn't seem like a formality. Site that have KYC rule must be able to store user data securely so it doesn't look bad. If KYC is considered a formality, then the security of user document cant be guaranteed.