A brief line from this comment indicates that the author of the cryonics-critical comment quoted here was perhaps not the one that deleted it.
You know what - I am rather glad my comment was deleted on less wrong - good reason for people not to post on there.
Was it deleted by a moderator?
Honestly, the decisive downvoting seemed to do the trick of hiding it from casual readers who don't want to see the long annoying rants. I don't think it was casting any doubt on the credibility of cryonics.
While it sounds like the author regrets posting it, I would think they should be allowed to delete it themselves.
Edit: Originally titled "Cryonics critical comment deleted?"
Richie is not a troll, he's been perfectly nice in person, completely sincere and identifies as a futurist. However he really doesn't seem to have any problem with acting like a total jerk online.
A troll really is about online acts. In person behavior isn't actually relevant. I would guess that most rolls are perfectly reasonable people in person. (While I do think it is possible to be an accidental troll, by spawning huge acrimonious and pointless threads without intending, but the disruption is still as much of a problem when it happens.)