He has been arguing mostly the same points for the past decade, but at least he's been consistent. The old saying comes to mind, "Markets can remain irrational longer than you can stay solvent."

I wanted to believe in MMT; it sounded at first like it could be something completely counterintuitive that just works, and some time later a rational quantity of math would explain it.

At the present, I think that was too wishful. The US seems to be able to print unlimitedly because of its unique status as the reserve currency. Once other countries opt out, and some are making concrete steps towards doing so, our dollar will quickly collapse, and it'll take the rest of our lives to experience a quality of living akin to today's.