1) There are no pretty boys working as dishwashers anywhere. Your typical dishwasher is either an old guy whose been dishwashing for over 15 years, autistic young adults who can't get work at positions that require social intelligence, mid 30s felons (usually with kids), something that shows they are employed. You're never going to find a 21 year old college senior Brad Pitt look alike, working in the back washing dishes for $7/hr. That guy will be found working at his dad's law firm etc.
2) In your original post you said the only requirements to get laid with a lot of hot women is to be: young, skinny, fun to hang around and open to drugs. I know someone from my previous job that fits exactly that description. He was young, skinny (had tattoos too), fun, and smoked weed. Guess what? He never got laid. And never would because I talked to the servers after work for drinks. And whenever his name came up it would always be like "awww so adowable". Of course he didn't look like Brad Pitt, but in your original post I didn't see that as a requirement. Just be young, skinny, fun and open to drugs.
3) False equivalent of comparing an unemployed guy living in his mom's basement to a dishwasher trying to bang the girls at his work. If your out cold approaching, it really doesn't matter what you do. You could be unemployed or hell even a dishwasher. Because the girls don't know who you are and you could just lie to them. That changes when you are trying to get laid with girls that see you everyday, and know exactly what you do for work. Status (where you are on the totem pole) plays a significant role when it comes to any sort of social circle style game compared to cold approach.