here here :
There is nothing offensive about being a service provider. Even a cleaner.

There’s only a difference – to work on people who sometimes say “thank you” or on people who regularly say “what shit you haven’t wiped out in my office, I’ve been shedding coffee for thirty seconds, my job is worth it, and you here the hell knows what you’re doing.”

So, those who use in everyday speech the circulation of "service personnel" usually fall into the second category.

Yes, but there is a nuance. In the original, a certain person was outraged not by the fact that the so-called "service personnel" people from the second category are in principle treated in a hamsky way, but by the fact that specifically his precious person dared to be counted as "service". That is, it turns out that humility and indulgence (not known what is worse) in relation to cleaners, waiters, etc. This is in order of things, this is the norm, and personally to him - this is already a reason for outrage.