I notice that I am confused. Kenneth Storey's credentials are formidable, but the article seems to get the basics of cryonics completely wrong. I suspect that the author, Kevin Miller, may be at fault here, failing to accurately represent Storey's case. The quotes are sparse, and the science more so. I propose looking elsewhere to confirm/clarify Storey's skepticism.
A Cryonic Shame from 2009 states that Storey dismisses cryonics on the basis of the temperature being too low and oxygen deprivation killing the cells due to the length of time required for cooling cryonics patients. This suggests that does know (as of 2009, at least) that cryonicists aren't flash-vitrifying patients. But it doesn't demonstrate any knowledge of cryoprotectants being used -- he suggests that we would use sugar like the wood frogs do.
...For one thing, cryonics institutes cool their bodies to temperatures of –80°C, and often subsequently to –2
If it's worth saying, but not worth its own post, even in Discussion, it goes here.