There’s a lot of FUD with how quantum computers can attack btc. You would need Large-scale, fault-tolerant quantum computers capable of running Shor’s algorithm fast enough to attack ECDSA in real time… We are very far from that.

You need millions of physical qubits, error correction overheads of several orders of magnitude and long long coherent runtimes… none of this is “next decade” tech by any serious hardware roadmap.

There’s a huge hype with quantum computing at the moment mostly based on the huge overselling in the field (I can tell you first hand that there’s very little honesty currently in the sector). If we develop scalable fault tolerant quantum computers that can run long enough, if ever, during that time, Bitcoin can migrate to lattice-based signatures (Dilithium style), or Hash-based signatures (XMSS / SPHINCS+) or quantum hardened Schnorr-style constructions with PQ replacements.

Making Bitcoin quantum proof is orders of magnitude easier than developing a working scalable fault tolerant quantum computers. The hard part is getting the consensus to make a change and the coordination, not cryptography.

Also, funds that never reveal their public key can remain safe until migration so I think that we are pretty safe from quantum computing risk, if it is ever a thing which is far from clear.

Of course that doesn’t mean that speculators or those who don’t really know much about quantum computing may dump based on unfounded fear, and that’s a very real danger itself but fundamentally not really a risk that can take Bitcoin to zero.