I have a theory (may be completely false) that, nowadays, people are so used to having an app or website where you press a button and it does it all for you instantly - obviously without needing to be thanked - many of them have actually lost the skills in dealing with actual people and the appreciation of human time, efforts and feelings, when helping or serving them - even in cases where the server has to go to a lot of effort or difficulty to do it
Nope. I worked in retail over 20 years ago and people were dickheads back then too. I worked in customer service (refunds and exchanges) and it's a combination of entitlement, service staff being 'lesser' ('I pay your wages!') and folk who told like being told 'No'.
Oh, yes, I do agree, of course; but what I'm driving at (and it is only an unprovable theory) is that there's a lot more blurring of the character types.
Back then, you'd have a certain kind of person - the 'call a spade a spade', 'don't mince my words', 'I speak my mind' arseholes personalities who had developed into/made the conscious decision to be like that and were proud to own their nastiness.
Nowadays, I'm wondering if that a lot of people end up in that mindset without really thinking about it or making that conscious decision - because they're so used to their phone doing many things for them in an instant and, of course, not needing/wanting to be thanked or shown any human courtesy in the meantime.
We've all had a good-natured smile when a (usually) elderly person makes their first forays on the internet and will use their normal inbuilt manners there, e.g. "Could you please help me to find out when the library in Tring is open until? Thank you very much" when all you really need is "Tring library opening times" - because it's a computer.
I just think there's at least an element of some people being so used to using (and getting frustrated with) emotionless tech that they forget how to relate to actual humans.