Incompetence and extreme hubris.
2018: Newly appointed Powell finally starts to raise rates and draw down the Fed's balance sheet after it recklessly kept rates historically low for years and years. Markets puke in Q4, Trump gets pissed, Powell capitulates and stops tightening. Market cheers, recovers and gets even bubblier in 2019.
2020: COVID. Market pukes bigtime, bubble really starts to pop. Powell/governments panic even harder, prints trillions out of thin air, creates unprecedented speculative mania.
Late 2020: Inflation starts showing up, but Fed doesn't see it.
Early 2021 Fed: Okay, we have some inflation, but we actually want inflation to run above target.
Mid 2021 Fed: Okay, yeah, inflation's running hot, but it's "transitory." We'll keep printing and keep rates at zero.
Late 2021 Fed: Shit, okay, maybe inflation isn't transitory. Time to talk like we're hawkish, but we won't do anything until March. Keep printing. Keep rates at zero.
2022: CPI at highest level in 40 years and climbing, stock/housing/bond bubble starting to pop and the Fed hasn't even begun hiking rates or reducing its balance sheet. Absolute clusterf*ck in progress. No good outcomes here. If Fed doesn't hike aggressively, inflation likely stays elevated, social stability may break down, and we get a recession with inflation. Yuck. If they do hike, say saiyonara to risk assets, house prices, bonds and say hello to recession.
Strap on a helmet. It's gonna be ugly for a while. And that's without all the recent Ukraine stuff going down.