Of course Lee can't keep THIS up. Nobody keeps their ERA under 1 without some luck and Lee's had plenty of it.
But his K/BB is 44/4. He's allowed one home run and five extra base hits total. His DIPS ERA is 1.87. He could stop getting lucky and still be the best pitcher in baseball. He could cool off considerably, have bad luck, and still be a very valuable fantasy commodity.
Those who keep doubting are going to end up sounding like Randy Quaid as the obnoxious fan in Major League II. "Yeah, he won the Cy Young, big deal. He'll blow it in the playoffs!"