I wondered why Holmes had never been forced out by investors or banks as a precondition of getting more support, but this explains why she's still there - they
can't, because she has majority share power and Theranos still has oceans of cash and no need to go begging to anyone. There's simply no way to stop her or force her out aside from long-shot minority shareholder lawsuits (although I think there's at least one of those ongoing), and it'll take years or decades for all the lawsuits to finish appeals and to spend the cash down with a skeleton crew.
Indeed, given how her reputation is radioactive, why would she ever leave Theranos anytime soon? No one is going to hire her for anything anywhere else; she can continue drawing a CEO salary/benefits and keep playing CEO and a sense of self-worth; she gets Theranos to pay her legal bills (which may not be trivial by the end); and can mess around with an enormous fortune of $200m however she likes; and who knows, may even succeed in a pivot to something else - hope springs eternal.
(I wonder how much cash Magic Leap has left.)