I'll offer a (small) defense for wait staffs who are forced to say crap like "Hi! I'm so-and-so!!! How can I help you!!!!"
I dislike the dropping down of plates followed by an immediate "Is everything alright?", and requests that get answered with "No Problem!"
A fellow classmate in college chemistry and graduate school was a waiter. He was a native Buffalonian of strong Polish extraction. Top shirt button always buttoned.
I once visited his place of employment - back when dining out was much more rare than now...reservations etc.
He acknowledged me as Mr. _____. He set his own tables - silverware and glassware placed in the formal dinner fashion. He served from the left. Knew when silverware placed on the plate meant removal. After serving a course, he came back 5 minutes later, and asked if all was suitable. If not, he would rectify it. Nothing was wrong.
When we were finished and wanted the bill, all I had to do was raise my head and look around, raise a finger. He acknowledged, walked over, and I said "bill, please." And it was delivered, and all he said was "Thank you for visiting us, Sir." None of this "Have a good day."
It wasn't just me, because he was a colleague of mine and putting on airs. I observed him - 'twas the same for all of his tables.
I hope he's still in the biz.