the thread caught my attention because I thought there are many sites without KYC, or They don't require that identification to operate, but I see that now getting a place like this is almost impossible
You are totally right.
It's almost impossible to find a crypto casino or a centralized service that will never ask you to verify your identity at some point even if they claim they won't.
Just recently, a new member complained on the scam accusation board about a casino for asking him to pass kyc after winning (obviously) although they have a huge banner on their main page stating that they are a kyc-free casino!
Finding no KYC is already difficult, I mean, finding reputable sites that have the right comments and support in the forum and we can more or less have some trust in them. The bonus is just cream of top since it is doubly beneficial to get the bonus without having to do so many explanations, proffs, etc... that sometimes are just a excuse to keep our money or keep it "in custody" for months.