I'd also like a detailed explanation of the "raping" that ensued. Who did the art and animation for both series? Can we be sure it's not intentional or that his style merely changed over time?
And here's a better question: Is the art/animation of K-on! actually objectively bad in any way? I can understand not liking the show, but is that because of some understandable and quantifiable quantity or are people just hatin' on it and everything associated with it?