I think you're absolutely right here -- and I would add the other meme common in that headspace: "No one knows what they're doing", a meme I also hate with a passion.

For all we know, Holmes could have harbored grave doubts about the viability of the tech, based on doing all the right sanity checks. But if she took the meme seriously, "hey, no one else knows what they're doing, no one knows why anything works, they just meander through life and things eventually fall into place. Once you have enough status, you're bulletproof, right?"