This answer raises the question of how narrow the scope of the contest is:

Do you want to specifically hear arguments from scientific evidence about how cryonics is not going to preserve your consciousness?

Or, do you want arguments not to do cryonics in general? Because that can also be accomplished via arguments as to the possible cons of having your consciousness preserved, arguments towards opportunity costs of attempting it (effective altruism), etc. It's a much broader question.

(Edit - nevermind, answered in the OP upon more careful reading)