alt Hacker NewsIs it?
Your reasoning relies on this being true:
> [CRQCs] will be slow, expensive, and power hungry for at least a decade
How could you know that? What if it was 5 years? 1 year? 6 months?
I predict there will be an insane global pivot once Q-day arrives. No nation wants to invest billions in science fiction. Every nation wants to invest billions in a practical reality of being able to read everyone's secrets.
The absolute low end of cost of a QC is the cost of an MRI machine ~100k-400k (cost of cooling the computer to super low temps). Sure we expect QCs to get faster and cheaper over time, but putting 100% faith in the security of the PQC algorithms seems like a bad idea with no upside.