adding something to fuel JET AI would consist of huge published research into effect on turbine blades and injector nozzles and especially contents of fuel tanks and settling of deposits of foreign matter in the wings used to store fuel .I am not saying that there isn’t a concerted effort to manage the weather, only that I don’t believe the commercial jet fleet is part of it.
with engines costing north of 20 million each --if anyone had any chance to weasel out of warranty the lawyers would grasp at any straw and you could not hide the addition of foreign matter into the fuel .
the amount of top management who would need to cover their expensive asses from lengthy jail terms for knowingly downing a plane with some spooky shit added to the fuel would leave its own trace .
the only place i could see this happening is in the military air fleet where they can do what they like.