As a person with no PB allergy, I worry whether GMO PB designed to not cause allergies to people allergic to PB, will cause an allergy to people who are not PB-allergic.
But seriously, I think most people who are scared of allergies brought on by GMO, are basically thinking that the novelty of the protein itself will cause their body to become allergic to it, as if the body works by storing a database of 'safe foods' and rejecting anything that's not in that database.
Great article, as usual, and funny, as usual.