Where?

Story from two years ago, before it blew up: https://news.ycombinator.com/item?id=9440595 - Lots of criticism, some even calling it a scam, yet no mention of sexism nor heavy downvotes.

The original submission: https://news.ycombinator.com/item?id=6349349 - Some criticism, not downvoted nor called sexism.

Tell me, where are all those comments warning us about the impending doom at Theranos and getting silenced by supporters calling them sexist?

There have been nearly 500 Theranos articles posted here over the years. You conclude it didn't happen after looking at two?

As someone who participated in the conversation, I know it happened. I'm not overly concerned with combing through the articles to convince you. The OP asked "how this happens"; if you don't think "girl power" at a time when sexism in tech was all over the place was one of the factors that led to an unqualified 20-something overseeing a potential giant fraud, I'm not sure what to tell you.

I looked at the two I could find with comments from before the whole thing blew up. The vast majority of posts about Theranos are post-blowout, from the past year and half, not those early discussions you were referring to.

> if you don't think "girl power" at a time when sexism in tech was all over the place was one of the factors that led to an unqualified 20-something overseeing a potential giant fraud, I'm not sure what to tell you.

I find your restatement of the previous claims inaccurate. You said "It was difficult to be critical, and supporters implied that the naysayers were merely "sexist"", which is much more specific that her gender having been a factor in story. Yes, it might have. Not in the way you portrayed it, though, in my opinion, at least not in HN.