I think you did. The argument (which may be wrong) is that agentic coding has a lower barrier to entry than hand-coding, and that since (barring AGI) there will remain a demand for hand-coding, that skill will become more valuable the more developers lose it, while agentic coding due to its lower barrier to entry will become less valuable.

Couldn't have said it better myself

It sounds like PHP and JavaScript all over again. The barrier was low and a lot of slop was produced by their users. Eventually due to huge demand, a lot of sophisticated things emerged (think V8, various frameworks, other browser gymnastics and evolving standards, etc).