The command was there 170 K and 34 BB is a 5 to 1 margin, that's huge. He did it over 223 innings, it's no fluke
This is your problem right here, 223 IP does not say this isn't a fluke at all. Pitchers have isolated seasons with great command all the time and then regress back towards normal. Look at say Chris Capuano in 2006 for an example. Lee will BB more this year than last year, his HR/FB was insanely lucky and won't stay at 5.1% and his LOB% wont' stay at 78%. This is a pitcher who is going to see his ERA up near 4 this year, not at ace like levels.
How can you say that his GB rate was lucky?
I can understand saying that Dice K was a fluke - he was insanely lucky to have a 2.90 ERA with 5 walks a game, only a 1.64 K/BB and a 2.67 BABIP.
None of the same fluke indicators appear with Lee - his BABP was .305. You cannot throw 3,300 pitches and say that a 46% GB rate is a fluke.
Look at Capuano's numbers. 2006 was the same as all of the other years. His GB% for 2004-2007 were 38, 38, 40 and 43%. And his fly ball rate never changed more than 2% year to year. 2006 he just stopped walking people with no explanation other than better control.
Lee is different. Not only did he have better control but reports show increased velocity and he became a different pitcher. His groundball rate increased from 35% to 46% and his flyball rate decreased from 50%
to 35%. As a consequence his HR rate fell from 1.75/9 to 0.48/9 and as a further consequence his LOB% rose from 62.5% to 78.3%. And you can't say that he was getting lucky because when hitters were making contact they were getting hits at a .305 average. The HR/FB rate was pretty low but not super crazy low and not something that will change a season. Lee was keeping the ball down with better control and greater velocity.
When so many people slag a good player like this without reason then all signs point to buy low.