I see two points:
1. AIs aren't yet good at architecture.
2. AIs aren't yet good at imagining technically exciting stuff to build.
And I agree that there's still space there to build a career in the short to medium term (plus Jevons Paradox). When both those points are no longer true we are certainly much closer to, dear I say it, agi. I suspect that (1) will be solved for somewhat limited domains in the near future using harnesses. And it could snowball from there.
Nearly every argument that hinges on the word "yet" is just an example of over-extrapolation[0] at play.
0: https://www.fallacyfiles.org/overxtra.html