The view of cryonics Tyson expresses here is, unfortunately, just the standard high-status-scientist conventional wisdom at the moment.
On the other hand, this is interesting:
What do you consider to be your greatest accomplishment scientifically? In life as a whole?
Made a prediction some years ago that there were 10x as many galaxies in the universe than had then been catalogued. based on a careful review of observation bias in how people obtained data on the universe. The actual number turned out to be about 5x as many galaxies. I got the wrong answer but for the right reasons, and it stimulated much further work on the subject.
In other words, he considers his greatest scientific achievement to be an improved estimate for a particular quantity, based on an analysis of biases in other people's data. That's rather...LWish.
It looks like he's just another smart guy who's no wiser outside the laboratory, which is very disappointing, as I greatly admire him as a scientist and advocate of science education. Bah. He's still on our side, or at least a fellow traveler.
Question:
His response:
Link