[nullc]

> Its deeply troublesome when

People just assume exponential growth goes on forever. You're giving a counter argument to moores law. Moore's law is not physical law, and physical law says otherwise here.

The amount of energy needed to update a counter 2^128 times on a non-reversible computer with the highest efficiency permitted by understood physics requires the energetic equivalent of something like 2 megatonns of TNT.

The additional state that brings security against brute force preimage attacks also tends to increase security against analytical attacks, as well as speculative QC attacks. So it's not worthless, at all— but your moore's law argument is not credible.