How does Ashizogi Jizo even tolerate Kurotsuchi AT ALL?

I can't wrap my head around Kurotsuchi's Zanpakuto spirit just being able to tolerate the constant abuse and experimentations that they suffer from Kurotsuchi, even more when I consider that this man has a fking Bankai, either Ashizogi Jizo gives no fucks, is an extreme masochist, or is just as crazy as Mayuri himself