I'm not there comment you referene, but for around three or four years I have been using theranos' board as a teaching tool in undergraduate entrepreneurship courses.
Once you've got a company with no product and you're committing fraud to stay alive, what would the point be of staffing a board to tell you to kill yourself? What would you get out of that?
Do you think Theranos just didn't realize anything was wrong because the board didn't tell them?