Fairy dust. Logical qubits are too noisy to be any use and we need too many physical qubits and the insane cooling capacity at scale to make them work…and even then the error correction is significant. Even if we get all those problems solved the only real threat is to old P2PK addresses which would be potentially devastating to the price but not to the system, unless quantum can crack private keys faster than 10 minutes.

No one should be panicking over this.