It's undeniably dismissive. Yes, the first sentence is a question, but "is it anything more than X?" is a rhetorical flourish meant to imply that the product is trivially replicated. The next sentence goes on to say that he's not impressed.
As pg put it:
Maybe you think you're making some sort of important point here. Or maybe you realize your comment is inane and you think it's witty. But (perhaps without realizing it) you and the people upvoting you represent one of the worst forces at work in the world. The people who ridicule new things when they first appear in incomplete form are one of the worst drags on innovation. [1]