I'm new here, but I think I've been lurking since the start of the (latest, anyway) cryonics debate.

I may have missed something, but I saw nobody claiming that signing up for cryonics was the obvious correct choice -- it was more people claiming that believing that cryonics is obviously the incorrect choice is irrational. And even that is perhaps too strong a claim -- I think the debate was more centred on the probability of cyronics working, rather than the utility of it.