Do you remember in Jurassic Park, when they explained The Lysine Contingency? Basically, the dinosaurs were genetically engineered to be unable to produce the essential amino acid, Lysine. That way, without the humans to supplement their diet with it, they would die.
Something about these boosters made me think of it…
Likely the next step after mass depopulation. Genetic alterations and food that they produce while everything else is poisoned. They've already introduced the idea of permanently contaminated water and started trading water futures last year. There are too many ways for them to attack us.