Why prompt engineer never became a real job?

around late 2024 I saw on various different websites, first about how agents will take over, which has happened in a way, though I will say different from how it was advertised, and second how prompt engineer will become the new staple tech job. given how claude is the most personality synergising chatbot and trained on undisclosed methods that anthropic keeps as their business secrets, and there's still a massive gap how people expect their prototype to look like vs what it actually gets stitched togther by llm. there are tons of other jobs that sound way less believable like thumbnail designer and social media intern, and everytime something gets accomplished ever there are some dudes pointing out how the poster could've done it more efficiently. just why isn't there the word wizard that figures out how to change prompt into what each person needs, saving them bunch of time and tokens, and no the clowns tooting their horn about 10x productivity prompts don't count, as they're surface