Excellent description, just another gimmick
Importantly, the good ones, what they do, is not necessarily something everyone (especially people with the mind of an engineer) can do well even though in paper it’s a stupid job. I can see prompt engineering be the same.
The vast majority of people I’ve seen, the only original things they can think of asking chatGPT is to come up with workout plans or ask unoriginal questions about common societal issues. There’s nuance and imagination involved in figuring out how to effectively interact with this human like system to get it to do exactly what you want.