Indeed, you've touched on a topic that stirs up quite the debate. The differences in the verification process between land-based and online casinos can certainly feel intrusive.
Consider this, though: online platforms don't have the advantage of physically seeing their clients, making it easier for individuals to hide illicit activities or engage in money laundering. Land-based casinos, on the other hand, can monitor their clientele more closely.
And how does seeing a person in real life give any advantage to casino? How can one hide illicit activities in online casino but isn't unable to do so in land-based casino? Money laundering is money laundering, none casino can get the idea of where does your money come from in real life. This is just bullshit, in real life they give you such comfort and atmosphere with beautiful girls that if we keep in mind the psychology of average male, in that are that person is gonna spend all the money and most of them do so to look cool in front of beautiful women and don't analyze that they don't care about him. Overall, casinos need your ID card to verify that you are 18 or higher, that's all.
None casino asks you for KYC unless you withdraw a lot of money, it's just a form of excuse from their side, they know that some people value their privacy and aren't going to submit KYC documents, in this case casino keeps all the profit.
If they really care about money laundering, why don't they ask me where did I get my 1 BTC to deposit on their website? Oh, that gets hot and interesting when I'm going to withdraw? C'mon!