The goal of OpenAI isn't to build a whole new industry of AI Artists, it's to make the AWS of creativity, which means it has to be so simple that you don't even need anyone who can write a good sentence. Just has to get good results from whatever they type.
You'll find these specialized positions working with AI as well soon.
We can deride it from not being "traditional" engineering, but engineering as defined as "doing the best you can with tools you have", certainly allows for a prompt engineer to be defined..
This is not a definition of engineering anyone sane holds. It's so broad it can be used to define a floor cleaner as an engineer (or, if you want higher tech involved, a floor cleaner with a roomba).
This is not logic, this is travesty.