1. Quantumrisk to dormant Bitcoin holdings
"If a nation state develops a sufficiently powerful quantum computer… seizure of the Satoshi‑era wallets … could fund either rogue actors or nation states." — jryio
2. Skepticism about near‑term practical quantum attacks
"Quantum computers don't break SHA‑256, nor would this attack be 'reasonably attributable' to a SHA‑256 break." — some_furry
"Nobody has even factored 21 yet on a real quantum computer." — os tre0id
3. Urgency of adopting post‑quantum cryptography
"The cost to switch to (hybrid) pqc is essentially zero when compared to the costs for not doing it." — scorpionfeet
These three themes capture the most common concerns and viewpoints expressed in the discussion.