Don’t forget Money Center banks like BofA went from 10% fractional reserve (they needed to theoretically have 10% of the amount they were lending) to 0%. That’s just a fancy way of saying they can print money by fiat just like the Fed does. The Fed is weird though because it may as well be owned by the banks as well, but the head of the Fed is appointed by the president.
There are arguments though that given our somewhat teetering system that they did some “goodish” things to prevent all out collapse. Their actions have not changed anything systemic though, and the system it’s arguably the problem.