Long-term question: quantum computing vs Bitcoin and longevity

I’ve been going down a bit of a rabbit hole thinking about Bitcoin long-term (like decades, not next cycle) and wanted to check this with people who know the protocol better than I do

. Quantum computing becomes more real. How much of an actual risk is it to Bitcoin’s current cryptography? I get that large-scale quantum attacks aren’t practical right now, but eventually they could be.

so here are my questions

• If quantum ever becomes strong enough to threaten ECDSA, how realistic is it for Bitcoin to upgrade to quantum-resistant signatures?
• Would that kind of transition hurt confidence or price long-term, or is it just another technical upgrade like past ones?
• Is anyone here genuinely worried about this, or is it mostly academic / FUD for now?
• And honestly, if quantum can break Bitcoin keys, wouldn’t that mean basically all modern cryptography (banks, governments, the internet) is already on fire?

Not trying to be alarmist, just thinking out loud and curious how people who’ve thought deeply about Bitcoin security see this playing out over the long run.