I know very little about economics so I can only parrot what I've heard from others but the consensus from everyone I've personally heard talk about Gary - not just Abundists - is that he's a crank when it comes to economics.

Really? I've never heard that. He seems reasonable to me. Can you provide a link where someone dismisses him as a "crank"?

I'd be interested to see whose opinion this is.

a quick google for 'garys economics critique' throws up a good few places to get started :) - I would summarise here, but I'm no expert and am just digging into this myself.

I had a quick search and there's a Reddit thread where the first comment is critical but they get corrected by replies. Then some right wing blogs that spend more time on ad hominem and remarks about "lefty" admirers than actually going into detail.

Did you find any intelligent criticism you can point out? I'm too lazy to trawl through endless stupidity to try and find a nugget of truth! :)