I wouldn't call myself "opposed" to cryonics (the concept of medical suspended animation strikes me as mostly a convenience if you can get it to work, and interesting for potential social implications), but I do tend to think it's overly-boosted here. After a thorough review of the actual work done by the major players in the field (a concise history of which reads like the script to a Coen Brothers movie), and looking over the biological x-factors involved vs the typical understanding of those x-factors here, I just don't find the case compelling. The idea's neat, but it seems like the cryo-boosters here are settling for a business/cultural model rife with consistent bad decisionmaking, built-in overconfidence (including in their messaging), a severe professionalism deficit, and not incidentally a long and sordid history of laziness, incompetence, and actual fraud.