He plays like a circus artist. Some people will find that attracting, others disturbing.
Very true. He can woo any audience by just making the most awful racket, playing 200 notes per second, and they will lap it up and stand on their toes applauding. I can see why some critics describe him as completely tasteless and non-musical.
Yet I think there is a genuine musician under all that greasepaint. I heard some excerpt on the radio the other day from his new CD of Chinese music. While the piece itself was little more than watered-down Debussy with black bean sauce, I think he played this with great sensitivity musicality. I also must take heed of my teacher's comment, who was present at a masterclass by Lang Lang, on Mozart I think, and she said he has a very solid musical background, and lots of intersting things to say about this repertoire.
My guess is he may well grow out of the silly antics and be a real great pianist yet.