He's not talking about death spookily happening to him during cryopreservation, he explicitly compares it to sleep, his question is closer to "does being killed in your sleep matter? Is it actually worth taking extra measures to make sure it doesn't happen, considering that it can't have negative effects on you and only affects your potential future happiness?", with a side of feeling (on an emotional level that makes him notice he's confused) that the differences between cryopreservation and sleep affect the answer to the question.

I think I responded to what you actually said there, but I'm not actually entirely sure what you're saying - what's the "something spooky"? What is it that happens "when you do that to other human organs" that even meaningfully applies to brains and spleens alike?