[fyi1183]

I've been wondering the same thing. A few points come to mind:

It's easy trot out the "but the bureaucracy!" argument.

Helicopter money is in-your-face money creation which brings out the gold bugs and inflation hyperventilators. QE as practiced is in comparison too mysterious for people to latch on to effectively.

Helicopter money was never really championed by anybody in the first place, so nobody really had to argue against it.

It's really unfortunate that a perfectly reasonable policy never got a fair chance. I do think it has a lot to do with ideological bias especially among central bankers, and with the fact that a lot of people on the left, who should naturally be in favour of such a policy, are too averse to studying economics and finance thoroughly enough to participate effectively in such discussions.