Kai censors plenty. I mean Blue Mr. Popo for heavens sake!
I believe cause Naruto was Toonami program, and Bleach was Adult Swim. So since Toonami dissolved Naruto was no longer apart of the programming. Not to mention they would also have to buy the rights to Shippuden as well.
I never said Kai didn't censor much. Two different paragraphs bro. -.-