Not necessarily... what is traditionally good looking, can also often be more entitled attitudes, narcissistic, and have little regard for the person serving them. Serving traditionally good looking people can also be draining because they are demanding, and someone who rides threw life on their looks, and has it easy, often has no reguard to others difficulties and struggles.I think attractive people always have an advantage in everything be it job interviews, or service.
Of course later on they have to be able prove their capability but even then they are given more leeway to do so.
All they have to do is smile and they receive more attention, the person giving it is usually unaware they are giving preferential treatment.
It is just the way life is.
Same in escorting the really attractive ladies get booked more often and are more popular, they will always find clients even if their service is mediocre unfortunately, you just need to go to the reviews even after many negative reviews guys still think with their little brain.
Personality matters so much more than looks when it comes to being able to give good service.