Complete platitude that ignores the point. What we signed up for in bitcoin is a system that protects the rightful ownership of coins that were purchased or earned legitimately. Quantum fundamentally changes the security assumptions and allows a group with quantum computers to take from the legitimate owners. The logic is the same as if the Bitcoin Core wallet were compromised. I would not want those funds flooding the market on account of a security vulnerability.

"What we signed up for in bitcoin is a system that protects the rightful ownership of coins that were purchased or earned legitimately." And freezing them is not protecting them. It's stealing them. It's not Bitcoin. Keep that side of the fork if you want, you may even do better short term as price depreciates from selling of unsecured coins. But the promise is dead. That chain will die.

I don't see the difference between massive mathematical breakthroughs versus poorly derived entropy. I also reject the framing of "selling of unsecured coins" The threat of a possible quantum computing breakthrough is not a justification for fiat that has guaranteed double-spending properties. If Bitcoin breaks. Buy bullets. But gold. But don't buy fiat.