Admittedly, I am a mid-brain just beginning to get into this stuff. But from what I hear the number of workable qubits is growing very quickly, and that is accelerating. The implication of that is that instead of looping for eons to find a solution to a problem all possible solutions within that qubit space can be attempted, basically simultaneously. This seems to reduce the probability that doing nothing is a workable strategy. I don’t have an informed opinion for how Bitcoin needs to solve this. But it seems clear to me that (without wanting to sound alarmist), we do need to work on this … very soon.