High altitude weather balloons on the other hand can carry up to 8000 lbs like the one from China the US let meander coast to coast over several military installations which could carry a B53 nuke after small modifications. Detonated at a high altitude could shut down the power grid coast to coast.

[1] - https://en.wikipedia.org/wiki/W80_(nuclear_warhead)

[2] - https://en.wikipedia.org/wiki/W54

[3] - https://en.wikipedia.org/wiki/B53_nuclear_bomb

I confess I'm struggling to find a payload that can remain in space for weeks or months and still be delivered by a highly visible fireball (for most of the trajectory) and an easily trackable lander to someone on the ground who would rather not have their precise position known. But that's just me.

Sounds a bit overengineered for civilian applications.