Granted, the "expert" from Oz is a tad nitpicky in his recollections of 4x4's he's supposedly driven (or in the case of the Overlander, NOT driven) in his 'extensive 4x4 past'.
I can't comment on a lot of his musings, having never driven a first generation Holden, a Daihatsu or some of the other marquees he mentioned.
What I will say is, whether we like it or not, he was spot on in his thoughts on the Overlander and honestly CJ's in general... It DOES suck petrol like a questionably-moraled young lady in a non-family-centric district in Hong Kong. Engineering and assembly at AMC DID lead to a plethora of little issues, non serious, that one often had to deal with all the road, leading one to carry a lot of spares and/or tools so you could work on them roadside.
The difference is, we embrace, nay we even LOVE the idiosyncrasies of AMC and our favorite rides, whereas the OP (and honestly much of the World's population) did not. I'm just not sure why he seems to have loved the CJ6 'cruiser' so much? Maybe he got lucky with that one...
A tool is a tool, and an opinion is an opinion. One get's the job done, and one just sucks up more oxygen. In this case, he's less of the former, and more of the latter.