Problem is, it doesn't register on the same level as (for example) Gurren Lagann trolling. With GL, you can insult a character on an acceptable level, or call out the plot as being absurd without appearing to act out of sheer aversion.
With Kamichu...well, look at >>11233105
"Fat"? Maybe, but it's irrelevant. You just don't care about things like that when you're waiting for the next line of dialogue. If they're a little chubby it just adds to the cuteness.>>11233204
Thin plot with unnecessarily inaccessible focus on music, restricting itself to romantic music majors who watch anime. An extremely small target market, though I do know it exists. I'd go on to say the manga is better, but that'd be going too far.