Earlier quoted context omitted.
How does saying what the parent say equate to having "little respect?" Some people enjoy their job, no matter what they do, for sure. Absolutely. Some people hate their job but pretend to love their job because part of their job (service) is to give the appearance that they are very, very happy. Pointing that out is not disrespectful.
To me the tone implied that all hotel workers must hate what they do or even see it as demeaning. Perhaps I read too much into it.
Part of good customer service in the US is pretending you're really really happy to do whatever it is you are doing for your customer. "It is my pleasure to serve you." The staff at Texas Roadhouse wear shirts that say "I love my job," for crying out loud. It's extremely unprofessional to complain to your customers so you're going to put a positive spin on everything.
Doubly so if you are really jonesing for a tip.
If I were in a customer service position and my customer asked me how I liked my job I'd tell them I loved it, no matter if it were the truth or not. I'd lie through my teeth because its my job to be positive, not honest. That's not to say you're always going to be dishonest.
It's just like when a stranger asks you "how you doing?" You say, "good, how about you?" Even when you're miserable. It's just a social nicety people do and has no bearing on how someone is actually doing. Pointing that out isn't implying that every single person who says "I'm doing good" is secretly miserable.