I think you may be missing a silent majority of people who passively judge cryonics as unlikely to work, and do not develop strong feelings or opinions about it besides that, because they have no reason to. I think this category, together with "too expensive to think about right now", forms the bulk of intelligent friends with whom I've discussed cryonics.
I don't think you're addressing the subject of this thread, which is "does there exist a strong technical argument against cryonics that a lot of people already know".
Question:
His response:
Link