Actually, he says, "the greatest moe anime I've ever seen", with a suitable hedge. But still!

Also:

Let’s cut to the chase: K-ON is a moe show. It always was and always will be. Sure, you can watch it for the comedy or the music, but that’s like watching Evangelion for the cool robots – it’s acceptable, but it’s not the main point. [...]

In a sense, it’s the antithesis of the harem/galge genre: instead of making a guy date cute girls, why not just focus on the cute girls?

Sounds familiar, isn't it? It's like debating if you laugh or cry when Osaka loses the soap. And yet, I think K-ON is no Azumanga. Azumanga had no band, so it truly was about girls themselves. K-ON focuses, yes, but not exclusively.