Satoshi Nakamoto is a mathematician. I am a physicist. I had a mathematics professor that could be compared with Satoshi Nakamoto. When bitcoin was invented in 2009, the quantum adventure was at its beginnings.
I made my PhD thesis on quantum wells (in 2000), in 2009 what was in my PhD thesis was learned in the QM in the 2nd year of faculty. When bitcoin was invented no one could say that Quantum Computers will be invented in 10 years.
Thus, Satoshi Nakamoto did not think that quantum computers will exist when he invented the bitcoin.
Google has claimed "their processor was able to perform a calculation in three minutes and 20 seconds that would take today's most advanced classical computer, known as Summit, approximately 10,000 years.""But quantum computers won't break every piece of cryptography, only some. Specifically, public-private key encryption, diffe-hellman key exchange, and digital signatures will be broken, but hashing and symmetric encryption cannot be broken even in theory by a quantum computer........"
To continue the explanations go to
https://zoobc.how/?qa=132/think-quantum-computers-possibly-able-hack-compromise-crypto and in case you're interested to the project, please join the forum and see the discussion on
https://zoobc.org/ There are not many quantum computers in the world, and if someone wants to crack cryptography they will have very big problems. So I think no one dares to do it