I think I saw an interview once where Uematsu said he "could not" write classical music. I don't know if I'd be so fast to say that he "can't" write this style of music, but he certainly doesn't.

Admittedly, it sounds like classical music, but it's more like a caricature of the genre. The incessant looping in video game music does not lend itself to any classical forms. In fact, the looping is a lot closer to folk music and peasant dances and so Uematsus music fits Dr.rydrums definition awkwardly at best.

That said, I consider Uematsu one of the greatest living melody makers. It takes real talent to keep a listener interested while still giving them the notes their brain is expecting, and that is exactly what Uematsu does in every single track he has ever composed for games.