Because people say they are good animes, they aren't.
In relative terms, they are like how twilight was.
The book was ok(manga in this case) but the movie(anime) is just shit by any critical standpoint.
Naruto/Bleach also have this insane amount of easy to pick flaws. Half the episodes are fillers, and to be honest, the both shows really don't have much of anything people look for in an anime.