I don't want to allinat myself so what argue to much but don't get why my comparison to a hair dresser not wanting to cut hair is a bad one, why should a hair dresser have to do things they don't feel comfortable with?
I honestly can't tell whether you're deliberately trolling or just misunderstanding me. If a hairdresser didn't want to cut hair then of course they don't have to - they would advertise that fact (and that they were a colour specialist, or whatever) and then people who called and asked for a haircut would be told to book somebody who offered the service they wanted. It would be unusual, but I have no doubt that it happens.
The difference is that it is a reasonable expectation that a hairdresser will cut hair. There is no such standard expectation with sex work because the services offered and the people offering them are so diverse, and therefore comparisons to people fixing engines and so on don't work. There are prostitutes who do and don't kiss, fuck, perform/receive oral, allow anal, fingering and everything other conceivable service and nobody anywhere has any business telling any of us that we 'should' be doing anything because it's 'standard'. Nothing is.