It seems really dumb to freeze coins that aren’t stolen preemptively that we don’t even know can be stolen. There are vulnerable keys on bitcoin all the time. If anyone has problems with confiscating >1000 sat UTXOs with some proposal like the cat (which I agree is way too far, btw), then I can’t see how freezing coins - not because QC is here - but because enough people are afraid that it’s eminent that we are going to go ahead and essentially cause the very harm that others would be vulnerable to (losing their coins) before the quantum attacker does it.