I don’t hate Saylor’s take here: give people a year or two to move their coins into quantum-safe wallets (which everyone who still has access to their keys will do…unless they are retarded).
If coins aren’t moved, it’s most likely because the owner is either dead or has already lost their keys (meaning those coins wouldn’t be movable anyway). Freezing them just ensures they can’t be stolen, which seems reasonable to me.
Silver lining is that we’d finally get a clearer picture of how many coins are truly lost. And the asset becomes even more scarce.