> There are millions of servers on the U.S. Internet outside of major data centers.
And they largely rely on a surprisingly centralized infrastructure to function.
> Taking Internet trunks offline would disrupt most domestic functions of government, for example.
Sure, but in the sort of scenario you're considering "take the Internet down", that has already occurred.
If the government has already been disrupted, then who is taking down the Internet?
No, the goal of “take down the Internet” is to degrade the organizing of protestors / agitators / insurgents, while preserving the ability of government to organize against them. It only works if the government has a separate sufficient infrastructure, or completely controls routing on shared infrastructure. Neither of those are true in the U.S.
To pick just one recent newsworthy example, the federal government does not have a way to deny Signal messaging to their opponents, while preserving their own use of it.