Prompt engineering (communicating with models?) is a foundational skill. Skills, tools, MCPs, etc. are all built on prompts.
My take is that the overlap is strongest with engineering management. If you can learn how to manage a team of human engineers well, that translates to managing a team of agents well.
And if learned how to articulate assignments for humans right in a clear way, you likely also can do a prompt right.
None of that knowlege will get useless, only working around current limitations of agents will.