You'll note I criticized his use of words and not his economics per say. Special mention really ought to go to his use of "keynesian" as a shorthand for "stuff I don't like".
But I'll critique other stuff because I can.
First, his decision to use debt
numbers rather than the far more relevant debt to GDP or debt to revenue that sane people use. Just think of it this way: a debt of $1 million is a lot for an individual but is a rounding error for most governments. In other words: $30 billion might sound like a lot... but it isn't if the state has revenues of $2.45 trillion in FY2012 and a tax base of something like $15.6 trillion in 2012. If you actually look at debt to GDP you'll find that the US has about the same debt-to-GDP ratio as that supposed economic megastar
Germany. But omg omg omg big numbers!!!!!!!!
Second, his claims to economic omniscience are also hilarious. How for example does he know that "there was never a remote threat of a Great Depression 2.0 or of a financial nuclear winter?" I mean Jesus H. Christ commercial paper froze. Insurance markets clogged. Main street banks came under threat. Governments couldn't float bonds. That's real economy stuff. The latter in particular if left alone would have resulted in governments being forced to shut-down. (Why? Because state cash flows tend to be concentrated around tax time. So governments tend to issue bonds to cover 'the gap'. If government can't issue paper they can't cover stuff like wages regardless of their underlying solvency).
I sorta agree with a fair few of his other points. He's right about the distributional effect of monetary policy. It has overwhelmingly helped the very rich. Unfortunately, we had no real means of knowing it would do that since most of what was done was new hat. I also agree that how it was executed was problematic for lots of reasons. On the other hand, I strongly disagree with his alternative: fiddle while the economy burns. I also think his predictions of another "collapse" are, well, alarmist. I wouldn't be surprised to see a stock market adjustment but I'm not sure how that will feed into the real economy. I also think his support of a balanced budget adjustment is stupid as hell. I also find his view that the real culprit for the big banks is Keynes rather than a permissive policy environment that was the
direct result of free-market reforms aimed at permitting large national banks to form.