MMT doesn't argue that fiscal deficits don't matter, it states that the only constraint is inflation, which is more related to the real economy (eg. supply/demand, trade / current account deficits).
MMT doesn't necessarily condone the Fed's recent round of unlimited QE. Most MMT advocates if anything would probably prefer that money going directly to the people (ie. helicopter money) or to fund ambitious federal programs (eg. job guarantee, UBI, investment) than bailing out mortgage bond investors.
MMT doesn't necessarily condone the Fed's recent round of unlimited QE. Most MMT advocates if anything would probably prefer that money going directly to the people (ie. helicopter money) or to fund ambitious federal programs (eg. job guarantee, UBI, investment) than bailing out mortgage bond investors.