My opinion on this comment is that it is completely wrong.
1. Currently, Prompt Engineering works, and that alone is a reasonable reason for people to explore it. The concept of doing nothing about things that work today because there might be a day when they become obsolete makes no sense at all.
2. Prompt Engineering is important and meaningful. Most people are thoroughly incompetent at giving instructions. And it's a core skill of projects. An incompetent person will fail, no matter how competent their subordinates are.
3. PE is something that will be needed even as AI gets better (until we have omnipotent superintelligence). In fact, even giving instructions to humans requires PE. It's a limitation of human language.
4. I think it's also wrong that people's motivation for exploring PE now is an attempt to make room for humans. Have you ever been to an AI drawing community?
5. It's not PE that should exist for human intermediaries, it's the skills to handle AI, including PE. If humans no longer need the skills to deal with AI, it will be AGI by definition. If what you're saying is that when AGI comes along, all humans will be unnecessary, that might be true, but then what you're saying is meaningless.