It's perfectly clear from context that I am referring to the entire cryonics refrigeration and revival process

Ok. So you are talking about the entire process. What then is your objection to the refrigeration aspect? Do you think that the information is irretrievably destroyed? Do you think that the information is not destroyed but that the body is too far damaged to ever be restored in any useful way? Do you think that the preservation process does not do a good enough job at preventing ongoing damage? Do you think that the probability of thawing due to the catastrophic events or economic problems is too high? Or do you have some other objection that I have not listed?