I'm going to guess you have never worked a service job.

It sucks. People suck, you get yelled at, insulted, demeaned, shit pay, long hours.

Tech work is the cushiest job ever. It takes almost no effort to get into, you get paid insanely well, and skills are always in demand.

What is there to complain about?

You did notice the first line of my post, right? Where I said by most measures tech work is a better job? :)

It's a nice field in comparison for sure. But some people really do have bad experiences in tech.

Some customers will like them. Some will thank them - and once in a blue moon, even thank them sincerely. But a small but non-zero subset of customers will scream in their face, curse them out in graphic terms, and threaten to get them fired or arrested for some perceived slight or mistake. And a larger subset will very obviously treat them as "servant class".