I hate it as much as the next person when people make unwarranted comparisons between AI and humans, but... there are multiple fields dedicated to studying effective human communication, with research into which writing techniques are most effective for pedagogy, technical communication, legal communication, and so on. Even if we achieved full smarter-than-human AGI, I don't expect prompt engineering to go away.

The real problem is that we insisted on giving a discipline that is far more art than science the title "engineering".