This is a good counter in my view to the singularity argument:

https://timdettmers.com/2025/12/10/why-agi-will-not-happen/

I think if we obtain relevant-scale quantum computers, and/or other compute paradigms, we might get a limited intelligence explosion -- for a while. Because computation is physical, with all the limits thereof. The physics of pushing electrons through wires is not as nonlinear in gain as it used to be. Getting this across to people who only think in terms of the abstract digital world and not the non-digital world of actual physics is always challenging, however.