That shouldn't be an issue because nobody should eat fertilizer! It's plant food, not people food.

Most sources say 8 billion. Anyway, he said that some people are so sick that they can't eat non-organic food. Not food with a specific pesticide. His claim is very different from yours, and IMO his is indefensible.

But to the consumer it's not clear what is causing the issue. They might just see that they can eat only organic vegetables.

For example, my mom has told me she can't eat bell peppers from Spain because she get diarrhea from them.

Now, I don't think that bell peppers grow different in Spain than they do in Portugal or in Italy, it's probably some pesticide or some fertilizer or something. It's probably not all spanish peppers, but we just don't know enough about the produce at the supermarket. All they tell us is the country of origin, so the only thing she can do is avoid spanish peppers.