This is actually a very funny and entertaining chibi show to watch.
one reason might be that they dont even understand some jokes (maybe because they dont like Naruto).
another reason i can think of that makes people give it one star is that its airing on Bleach's Time slot.
I Love Bleach.
and some have become aggressive that it REPLACED Bleach. thats not the case.
Bleach is not finished it will come back soon ^^. so keep your cool and enjoy this show.