If you have a technical argument against cryonics, please write it up as an actual blog post, ideally under your real name so you can flash your credentials. It will be the most substantial essay arguing for such a point ever written: see my blog. I'm pretty convinced that if there was really a strong argument of the sort you're trying to make, someone would already have done this, so I take it as strong evidence that they haven't.
Not weighing in either way on cryonics itself, but on the meta level: Why do you consider that strong evidence? It seems to me that most people who don't think cryonics will work simply aren't interested in it, and therefore haven't tried very hard to prove that they're right.
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