Just as your point 1 is equally denial.
Point 2 is far from `blindingly obvious`; in fact, gas prices here have gone down a bit in the last year ... when did they run out again?
Far from being Creationists, the global-warming scam scientists are just crying wolf to get some attention and, most importantly, more funding and influence (they're really jealous of the finance people these days ... finance people make lots of money, drive fancy cars and get laid).
Point 4 is simple pragmatism which is unacceptable to liberals given they typically feel they can't survive if things go bad (`lock and load` is not a term they're typically familiar with).
George Carlin, while not perhaps being scientifically trained, at least doesn't have a self-interest like self-aggrandizing and propagandizing pseudo-scientists with lousy career paths.