I'm well aware of both the note and the jump. If you think that increase is merely an artifact of a change in methodology then you should spend a bit more time researching on what you're looking at. The jump is quite real.

There's actually a good stack exchange post covering this: https://economics.stackexchange.com/questions/45886/has-ther...

As well as the FRED itself release and explanation: https://fredblog.stlouisfed.org/2021/01/whats-behind-the-rec...

> In late February and early March of 2020, the Fed cut its policy interest rate dramatically to help ease credit conditions during the COVID-19 crisis. The resulting acceleration in the supply of M1 can be understood largely as banks accommodating an increase in people’s demand for money.

This leads back to your original "money will be cheap again" point. It won't, since we're partially living in the consequences of doing this during covid. Inflation is being driven by many factors, but the FED will continue to increase interest rates to try to fight it.

Again I'll be more than happy to see you proven right but so far your responses haven't given me much confidence.