That's nonsense. Coke and Pepsi will not allow their bottlers to hurt their brand. If what this article claims is true, then these two manufacturers will be all over this. A company doesn't create the most recognized brand in the world by treating their customers in the manner you describe.
There s no smoke without fire.
If what you say is true and there is indeed no pessticides in the soft drinks then there would be no controversy in the first place.