As someone who worked in the restaurant industry, and who's immediate and extended family worked in the restaurant industry, this feels like: https://en.wikipedia.org/wiki/Narcissism_of_small_difference...

I've worked at pretty nice restaurants and while attitudes like yours were pretty pervasive, the only real difference between bussing and waiting was that wait staff was over 21 and thus able to serve alcohol.

I can also tell you from years of experience that waiters are the most stuck up classist poor people I've ever seen.