Many people suggest to keep your bitcoin holdings secret, thus preserving the anonymity of bitcoin to a certain degree.
But then you get sportsbooks asking for photos and passports, and god only knows what else.
If a sportsbook wants all this, I respectly suggest they change to fiat.
I think I understand the reason for your outburst but really the only concern should be what they are doing with the information they are collecting. If its a legit site that complies with Privacy rule then they would have. The crypto world is fast changing and at the same time facing series of opposition because of the anonymity that alot of people have hidden under to perpetuate some unholy activities that continues to soil the names of everyone who is operating in the market. So what the gambling sites especially the big ones are doing is to try as much as possible to change the narrative in their own little way which is implementing a KYC system.