People will be able to take your coins in your cold wallet via just reading the public ledger and seeing a balance. They'll dump from your private key with the right code and enough qubits.

I'm _pretty_ sure we already have the qubits, it's the code we're lacking [unless you're a 3 letter agency].

There's a reason we see this cryptography being rolled in the wild.

When the genesis key gets dumped, how much value is there in the useless coins?

By forking _new_ we can have people _safely_ move their coins to another in a fair and equitable manner.

Technically, we could just outlaw stealing keys, but that'd totally not work >.<


Mind you:

Not all attacks are small improvements. It’s possible that improvements in cryptanalysis break all security levels at once.

Assuming that hashing is broken before key generation is a bit foolish as a whole.