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No, he doesn't have schizophrenia; ariputra himself wrote a few pages ago that he drinks a tincture made from fly agaric mushrooms, and that's what's messing him up pretty badly.
As for the anti-Semitic theme, it's well-known that the Jews themselves are the ones who come up with it, so I think ariputra definitely has some Jewish blood in him, maybe a quarter or less, but it's there.
