I think we all can agree -- like CyJack13 states -- McKay IS a role player.
But the very least Greenberg could do is admit he was wrong on two things in his original tweet. One, McKay hasn't "hurt the team's spacing" on offense, and two, McKay has made an "instant impact" for Iowa State. No harm in admitting when you are wrong, Mr. Greenberg. Those "crazy" ISU fans will forgive you.
I am guessing your definition of instant impact is different than Greenberg's.
He was largely correct on McKay, other than the spacing comments. He was likely guilty of buying too much into the chucker/niche offense myth.