Isn’t this a self-created problem? They had no real excuse to carry on QE past 2010 when the economy had started recovering.
It is almost like the system should have automated rules in place to prevent this from being possible.
I say that inflation was too low 1990-2020 not because they mismeasured it, but because the Fed kept the rates too high.
The CPI basket undermeasures volatility, but it's not bad at measuring inflation. Not great, but every alternative basket I've seen proposed has been worse.