The key sentence in TFA is "In essence, they cannot be compelled to be what they are not.". That's a highly theoretical argument and I simply differ of opinion. In essence everybody can be compelled to be what they are not, all it takes is the right circumstances and your Saint will be a sinner and the other way around.

I'm far more interested in the interplay between people and their circumstances than I am in labeling a particular human as authentic or not, it smacks of a value judgment in a vacuum, whereas IRL there is no such thing.