
That’s not what I’m trying to say. I’m not saying apply 1000 classical algos on top of 1000 quantum algos. I’m saying that post-quantum needs to be an extra layer, not a replacement.
This is explained further in the first few sentences of the third link I posted: https://blog.cr.yp.to/20251004-weakened.html. Note the author is an expert in the topic: https://en.wikipedia.org/wiki/Daniel_J._Bernstein
Quantum computers represent a complete paradigmatic. Modern quantum computers beat classical ones on some problems, while still not being able to factor some 2 digit numbers.
A single algorithm would be probable arrive some day, but why risk it right now? The Signal protocol adopted Post-Quantum some years ago. They going for a hybrid, not well tested over several years against classical computers, algorithm, would have been a security disaster.