> How much of that is purely balking over the high valuation?[...]this is a fairly normal health startup otherwise

Absolutely not. Start-ups are supposed to fail early and fail often but when you're in the medical space you simply can't act entirely like a technology start-up. People's lives depend on many of these tests; you can't just go "well let's ignore the FDA and we'll take the slap on the wrist" like in other industries. Here they might deliver inaccurate test results that are then used to treat someone for a medical issue.

That can be deadly. Yeah many people are going crazy from the valuation and secrecy but there is plenty of legitimate scrutiny here especially if you read this article (I'm assuming you didn't because of your very generic Theranos comment versus addressing the issues in the article itself which sound grossly negligent, IMHO).