80% of dollars were printed (=made up digitally) in the last 3 years

Doesn't seem like it [0]:

[...] so it printed about 8% of the currency. An approximately equal amount of currency was destroyed

The reason for the sharp upturn in M1 in 2020 is that the measure was redefined in May 2020

[0] https://skeptics.stackexchange.com/a/53092