I could just be mind projecting but for people similar to LWers, i.e. the low hanging fruit, it would be helpful to call attention to a meta issue: that the skepticism is motivated. In a finite amount of time, you can only refute a finite number of counter-arguments, the problem isn't that people believe the ice issue unsolved, it's that they are bottomless wells of objections because it feels icky.

Any commercial would make the idea more normal/available to people; there might actually be little difference in positive impact from a fairly well designed pro-cryonics commercial and an moderate quality anti-cryonics commercial that brings up the issue and implies the existence of an opposing side.