he vast majority are just brainwashed young men with no good options
Definitely a significant portion, but not "the vast majority". It also doesn't matter in the big picture because they are complicit as members of an invading force.
They're were a couple of dudes standing around the vehicle who are definitely 400. If those were trained on electronic warfare, definitely good value for the money. I wonder how long it is between spotting, launch, and impact, they muss have been stationary for a while.