That's because their claims of enviro-superiority are like medieval "indulgences", permissions to sin without penalty. So Saint AlGore flies all over the world preaching the "Stop flying!" mantra, as if he'd never heard of Skype or Webex.
Thomas Jefferson wrote, "All men are created equal." Thomas Jefferson owned slaves. Therefore all men are not created equal and we need to go back to feudalism. Yes, it's crap. It's crap in exactly the same way that your yelling about AAAAALLLLL GOOOORRRRRE! is crap.