The mind likes to wander to "what if death ray?" but the real, boring answer is probably that money === yams, and those who have the yams have the power. The array provides paying customers who bolster the war chest, and maybe down the road the satellite array could be used form something, but if they all burn out or otherwise become junk over time, at least the paying customers have galvanized the bank account.

Then with the bank account, you can do whatever else needs to be done at a later date

I was thinking more along the lines of Havana Syndrome. The brain is an electro-chemical system, so this is as much a biology question as it is a physics one. Direct enough wattage at it for long enough, who knows what the effects will be? Not cooking, but signal interference.