Amanda Seyfried is so great in this and glad it wasn't Kate Mckinnon who would have been miscast and distracting for this particular role, Elizabeth Holmes' youth and naivete is central to the whole thing
Wow, was she slated to be involved in this at once point? I'm running through this now and I have to say that some of Seyfried's mannerisms as Elizabeth are very McKinnon-esque. That being said I totally agree with you. Blown away by Seyfried's performance this is fantastic.
Due to the proximity of releases I'm going to assume her scheduling conflict was that Tiger King show - which looks fucking unwatchable.