That wasn't just a list of things they could besides breaking crypto. It was the list of the main reasons people are investing in trying to build them.

As you noted the problems they pose for cryptography can be addressed with PQC. Military/Defense/National Security invests in them for the cryptographic applications (and probably also for the logistics applications), but they are only about 1/3 of the investment.

The rest is for the doing better physics simulations and for logistics and financial applications. The physics simulations will be huge and drug development and materials science.