Adam Back suggested that the emergence of quantum computing could force Satoshi Nakamoto to move their Bitcoin to protect it, revealing whether they are alive.[...]
During an interview after a Q&A session at the “Satoshi Spritz” event in Turin on April 18, Back suggested that quantum computing may force Nakamoto to move their Bitcoin. That’s because, according to Back, Bitcoin holders will be forced to move their assets to newer, quantum-resistant signature-based addresses.
Back said that current quantum computers do not pose a credible threat to Bitcoin’s cryptography but will likely threaten it in the future. Back estimated that quantum computers may evolve to that extent in “maybe 20 years.”[...]
Consequently, he suggested that Bitcoin should be prepared to switch to quantum-resistant signatures but only do so when necessary. He suggested a Bitcoin taproot-based implementation allowing addresses to switch to quantum-resistant signatures when needed.https://cointelegraph.com/news/quantum-computers-likely-to-reveal-if-satoshi-is-alive-adam-back This is a very interesting subject. I'm not expert but I think that Satoshi will still not be in a huge danger because if I remember correctly, his public keys are not known.
By the way, it's clear that we will be ready before quantum computing gets developed enough to make a threat for Bitcoin, so, to my mind, this means that satoshi's coins will be treated differently. Also, exclusively his address can be blocked if he doesn't appear. Anyways, I think that satoshi will not return and the quantum attack will not happen in the next 10 years but the heat is here and it's only getting interesting.