I don't watch the Suns much anymore. And, I do think Booker is probably pretty good. But when I have seen him play, he seems not to play well.
Bad, unforced turnovers, misses fairly easy looking shots, and (as others have pointed out) just dribbles/does easy too much one on one or two.
I, for one, am glad to see him take a couple of games off, and see that the Suns can play good without him in the lineup.
Unfortunately, I think the NBA encourages and reinforces this type of one on one play with the newish rules and poor officiating.