It seems that you are venturing into No true Scotsman territory:
It seems like you're doing exactly the same thing you did before: confusing subsets with their parent sets. A subset of various fields would, I assume, have enough relevant expertise to debunk cryonics; these individuals are, traditionally, distinguished from laymen with PHDs by their arguments.
What I observe, however, is that most people, including those in the referenced fields, have only the vaguest position on cryonics picked up from pop-culture. If you're lucky, something like "those idiots spend a fortune on con artists who tell them freezing a body means it can be revived after Science develops a cure for whatever killed them."
Most "experts" are not, in fact, any such thing; and most people, expert and non-, have not considered the possibility in any detail. The fact that physicists have not flocked to cryonics providers is not in any sense strong evidence that they possess evidence we don't.
Tapping out now.
What I observe, however, is that most people, including those in the referenced fields, have only the vaguest position on cryonics picked up from pop-culture. If you're lucky, something like "those idiots spend a fortune on con artists who tell them freezing a body means it can be revived after Science develops a cure for whatever killed them."
Common sense positions aren't necessarily wrong: any astrogeologist will agree that the Moon is indeed not made of green cheese.
Anyway, comments by "kalla724", who identifies him/herself as a n...
In the past, the Cryonics Institute has had a policy that said that they would not accept anyone who is not a member. This has changed. The policy now is that someone who has full legal authority over your body can sign you up after you die. It costs $36,250 to be frozen if you are not signed up, which is more expensive. They also will not do anything until you have been on dry ice for 2 weeks after they have been contacted, so not being a member is more risky.
This is very important news for anyone who is currently cryocrastinating. It means that you can drastically increase your chances of survival without filling out any forms. All you have to do is tell a loved one you want to be frozen upon death, and that you would like them to take responsibility for making sure this happens. This takes literally 30 seconds. Do it now!
This news might also be a reason to not sign up right away, if you think something better (like radical life extension or uploading) will come along in your lifetime. We should discuss this in the comments.
Edit: The general consensus of this discussion is that this is a really bad reason not to sign up for cryonics.