By the time we realize that this is about to be reality, it will already be too late. I really do hope that Bitcoin Core devs and the community make a collectiv

By the time we realize that this is about to be reality, it will already be too late. I really do hope that Bitcoin Core devs and the community make a collective effort to approach this while it's still not necessary any time soon, than be caught with our pants down and leaving users too little time to react. Negotiation for a solution will be years, rollout on the mainnet should also be a year or two, and there should be a gap of several years after activation of whatever new signature scheme until it becomes necessary. So if we're being risk-averse and having the worst-case in mind, it's time to get the ball rolling now.