How is it illegal? They are not discriminating on the basis of a protected class. They are private/progressive businesses and can do what they want (unless they are a conservative baker or florist.) That's why I mentioned tech censorship. People screamed "But the first amendment!" and we were told private businesses can do what they want. So these private businesses are doing what the government can't do (not that anyone in government really cares about the law or the Constitution.)

ETA: It is not a HIPAA violation because it is all voluntary. You have the right to not provide your personal medical information. But if you want to enter the business then you have to make that choice. Is it right? Not in my opinion but it is not illegal at this point in time.

How is it illegal? They are not discriminating on the basis of a protected class. They are private/progressive businesses and can do what they want (unless they are a conservative baker or florist.) That's why I mentioned tech censorship. People screamed "But the first amendment!" and we were told private businesses can do what they want. So these private businesses are doing what the government can't do (not that anyone in government really cares about the law or the Constitution.)