Another reason that the fact that cryonics stabilization does not meet the standards of hypopthermic medicine is not exactly evidence of incompetence is that there is not a competitor out there providing better stabilizations.
That is, if we are assuming a sufficiently narrow and connotation-free definition of incompetence which involves comparison to competitors, the test of being substantially worse than one's competitors is one that SA fails with flying colors.
I recently found something that may be of concern to some of the readers here.
On her blog, Melody Maxim, former employee of Suspended Animation, provider of "standby services" for Cryonics Institute customers, describes several examples of gross incompetence in providing those services. Specifically, spending large amounts of money on designing and manufacturing novel perfusion equipment when cheaper, more effective devices that could be adapted to serve their purposes already existed, hiring laymen to perform difficult medical procedures who then botched them, and even finding themselves unable to get their equipment loaded onto a plane because it exceeded the weight limit.
An excerpt from one of her posts, "Why I Believe Cryonics Should Be Regulated":