I think IQ is an underappreciated quality in baseball. For example, Votto would be no where as successful as he has been for so long in his career had he not been a very smart and analytical player. Now try to put Vlad and Analytical in the same sentence while keeping a straight face.
Vlad is just dumb. You see it in his baserunning. You see it in his lack of adjustment. You see it in his inability to listen to his teammates when they tell him to f*** off with his childish antics during interviews. The guy is full of himself and does not realize how dumb and replacement-level he is.