Pity that there is such an unenlightened mood about.
Should there be full legalisation of the escort business they will be expected to meet the laws of the land including those against discrimination.
Remember that case of the baker in the north refusing to make a cake for a
gay couple?
Discrimination against any group used in broad strokes is just that Discrimination, be they young, old, fat, disabled foreign, black,white,yellow to use the examples quoted above. etc.
Seems like the fight for civil rights is going on longer than ever
p.s. I assume you would also support an escort that refused to see Catholics/nationalists working in the north, at least to be consistent in your opinions you would have to.