Does NGDP Level Targeting Work?

Kantoos:

NGDP level targeting works! « Kantoos Economics: It seems that Germany has found an amazing policy mix for dealing with severe crises: introduce NGDP level targeting and spread the temporary unemployment via subsidized Kurzarbeit over all workers. Of course, this conclusion and the title of the post are a bit provocative, as NGDP level targeting was never an official policy (if it were, Germany might have done even better!). However, the German case shows that the best way out of a severe crisis is to bring NGDP back on its trend path.

The problems with his argument, of course, are (a) no German policymaker ever said they were engaged in nominal GDP targeting and (b) any policy that works is likely to produce numbers that look a lot like nominal GDP targeting...