is that Lumborg used to be "one of them". That's probably why they are most offended by the book.

Lumborg himself doesn't say things are hunky-dory in a patronizingly Limbaugh manner; as you mentioned, he does say there are problems but not nearly on the order of, what was it, the Club of Rome that predicted we'd all be starving by the 70's? Then when that didn't work the 80's? Then when that didn't work the 90's?