Because they changed the quote from first person pronouns ("I'm a stupid moron with an ugly face and a big butt, and my butt smells, and I like to kiss my own butt") to third-person pronouns, but didn't change the last one. Also, they spelled "stupid" wrong.
It goes along with their idea that Jews are evil, but not so much their idea that they're weak and inferior. Ah well, fascism thrives on contradiction.
It's never made sense.
Why is Mario still young when Cranky Kong, the original Donkey Kong, is old?