From a medical perspective this is quite a hand-wavy fever dream interpretation of the immune system and psychology/psychiatry. It’s like saying you should use python instead of rust because it’s syntax more appropriately recapitulates the essence of human neural connectedness (or whatever). There are many types of paranoia (not one dimensional) and they don’t seem to all be trainable.
You'll get no argument here that it's hand-wavy! My goal was to point out that both our immune systems and our minds are imperfect at assessing threats and we can suffer greatly as a result. I'm glad you still found it thought-provoking.