My point about Friedman is that his overall positive assessment is foolish. IMO, the benefits of permissionless, privacy-protecting, crypto - ransoms, money laundering, tax evasion - far outweigh its benefits.

As for MMT, I think you're absolutely right about the practicalities. Ben Bernanke begged Congress to take fiscal action, and Sen. Schumer replied "So, get to work, Mr. Chairman."

Monetary policy is essentially MMT-oriented, i.e., the Fed's mandate is to maintain currency stability. (I regard the "employment" part of the mandate largely as political eyewash; if anything, it supports a dovish approach to raising rates.) If the Fed has its eye on inflation, it is practicing MMT.

The trick, as I said, is knowing what will or won't cause inflation. (See 1937.) The problem is that technology moves the goalposts. Globalization lowers marginal costs (or, at least it did before CoVID). Abundance absorbs new money. There is no limit to the number of movies Netflix can deliver. At zero marginal cost, demand lowers average costs and is deflationary. The Fed needs to keep such things in mind. Whether they do, or will, remains to be seen.