That’s true, but the absolute values of the timeframes involved are quite different. Classical computing is speeding up, for sure, but breaking RSA-4096 (as an

That’s true, but the absolute values of the timeframes involved are quite different. Classical computing is speeding up, for sure, but breaking RSA-4096 (as an example) will take significantly longer to be feasible than the 10-20 year estimate for quantum computers. That’s assuming that classical computers are still roughly following Moore’s Law. For quantum computers, the difference between RSA-2048 and RSA-4096 is pretty negligible (it’s linear) while it’s exponentially more difficult for classical computers. 10-20 years a short enough timeframe that all sorts of PII could remain useful. Some people haven’t changed their passwords in a decade or two. If you extend those timeframes out over 100+ years then the sensitivity of PII begins to decline pretty significantly, though admittedly not to zero.