I saw some people in panic or asking about the impact of quantum computing on cryptocurrencies.
At a high level, all crypto has to do is update to Quantum Resistant Algorithms (Post-Quantum). So, there is no need to panic. 😂
In practice, there are some execution considerations. It is difficult to organize updates in a decentralized world. There will likely be many debates about which algorithm(s) to use, resulting in some forks.
And some dead projects may not update at all. It might be good to clean those projects anyway.
A new code may introduce other errors or security problems in the short term.
People who have self-custody will need to migrate their coins to new wallets.
This raises the question about Satoshi's bitcoins. If those coins move, then it means that he/she is still around, which is interesting to know. If they do not move (within a certain period of time), it might be better to block (or effectively burn) those addresses so they do not go to the first hacker who breaks them. There is also the difficulty of identifying all his addresses, and not confusing them with some old hodlers. Anyway, it's a different topic for later.
Fundamentally:
It is always easier to encrypt than to decrypt.
More computing power is always good.
Crypto will stay, post-quantum.