Sure. But if you're going to bust on a guy, it should be for whether they aid a team at winning or losing. Whether or not the guy can balance a ball on his nose like a sea lion is pretty secondary at that point, so I don't see tricks worth getting worked up over.
A lot of people are irritated by him for his tricks (which is why you'll see animated gifs making fun of him on that basis a lot). I don't get all that, really. Seems totally irrelevant to anything -- whether you see them as positive or negative.
Sure, everyone hates a show-off. But the taunting over his tricks seems motivated more out of childish jealousy than anything else.