Disabling them is a means to deal economic damage, not an end-goal in itself.
People built centralized grids because it's cheaper to build and service when the equipment is concentrated in one place. The economy of scale kicks in.
If you move to decentralized so there's fewer outages, but now you're paying extra to maintain it, your solution is not as good as it used to be, that's economic damage right there.
And your enemy probably will also stop targeting the small decentralized grid elements, so they're not spending bucks on missiles. They can use more of them to hit other parts of your economy that are still centralized.
Estimating the net impact of this change is bigger than the article suggests.
People built centralized grids because it's cheaper to build and service when the equipment is concentrated in one place. The economy of scale kicks in.
If you move to decentralized so there's fewer outages, but now you're paying extra to maintain it, your solution is not as good as it used to be, that's economic damage right there.
And your enemy probably will also stop targeting the small decentralized grid elements, so they're not spending bucks on missiles. They can use more of them to hit other parts of your economy that are still centralized.
Estimating the net impact of this change is bigger than the article suggests.