At first, the PGP pushed a strong agenda of erudite European sensibilities vs. crass American sensibilities. Quennell is from New Zealand, I think; Michael a/k/a Fulcanelli is in Great Britain, and Peggy lived in Paris for 20 years. Many of the "leaders" at their blogs seem to live in or be from other countries. This is one reason they celebrate Barbie and Andrea -- both are American ex-pats living in Europe.
I didn't know that. Maybe they're so ready to judge/hate her because she represents a stereotype they've been so careful to avoid -- the stupid, thoughtless American who neither knows nor cares what the norms are in other countries.
I don't know how you get to she's-a-lying-murderer from there, though, without an extra ingredient or two.