Well, I did say it was wildly subjective. The fruit with cheese thing was to prove that, and it's not that I have an iron stomach. I've never even heard of this specific theory before, and, trust me, I'm not the only one combining fats with fruit.
Though, these people don't even eat other fats, so it could just be the hugely unsaturated content of those other fruits being combined with higher sugar(fructose) fruits, which makes sense. I don't eat those other fruits anyway.