Maybe not war crimes, but definitely charges for directly attacking a sovereign state’s military assets while engaged in an active operation. There has to be something in international law about this sort of behavior. Well, maybe not, since the ability for a single citizen to have the power to directly attack an entire military action is unprecedented. Seriously, what is stopping him from jamming any signal he wants if he can manage this? Will a full constellation be able to suppress wifi over a large area? Cell towers? Standard radio signals? Would it be able to be selective?
This action of his constitutes a privately owned and operated military-grade weapon which actually threatens even the super powers.