I’ve heard this, but then read things that dug a little more. They started around a decade before hand, and it was likely to counter roof top RPGs beging fired down, than javalins. This would be because that’s what they encountered in chechnya decades ago. Some people who support them like pretending they were for drone warfare (like they had esp), but there’s a kind of clear line between the Chechen war and the roof cages.