The internet couldn’t and still can’t be taken down - but countries can certainly restrict it within their locale (though it is insanely difficult).

The opinion is that the internet as a concept and set of protocols was and is too widespread to ever fully dismantle and one dude with a mission can capture and preserve an immense amount of data.

That’s still all true but doesn’t hold for social media walled gardens which have come to control a huge proportion of communication.