Feels like the whole argument is going on inside his own head, and whilst I've heard economists conclude policies they used to advocate wouldn't work before, I've never seen them handwave their earlier beliefs away as "totalitarian" without even acknowledging they actually used to hold them.
When interest rates entered negative territory, something deemed formally impossible a decade earlier, a huge alarm should have sounded in Economics. Instead, we got some after-the-fact explanations that are untestable, and continue applying the same old models.
Science is about constant questioning of assumptions, and I have the feeling Economics fails at this crucial step.
Now, the mantra is that near zero negatives are still within the efficacy envelope. It was not predicted, but stated after the fact. This is, to me, a clear sign that the model is wrong, and should be reviewed with no barriers to questioning basic assumptions.
The bulk of the article is an elaborate straw man followed by cherry picked statistics.