So is adding more protected classes progress in all cases, are are there certain criteria as to what counts as a protected class? And is this really progress (

So is adding more protected classes progress in all cases, are are there certain criteria as to what counts as a protected class? And is this really progress (imagine how protected classes works in certain jobs related to the sex industry), you are basically overriding a persons ability to consent, and even if the action is only something physical, is it really progress for the government to force consent under threat? And maybe we could even break it down. Maybe protected classes for employment is great and maybe protect classes for service aren't. Or maybe protected classes for employment is actually regressive because it is endorsement of all the factors you can discriminate on. For example, orientation isn't a protect class (at least not federally), and thus in many places is legal to discriminate based on. Perhaps progress would be that employment discrimination is only allowed for factors actually relevant to the job, and adding protected classes is a regression from this.