> The internet is not what’s being censored.

Well there's that thing with some countries blocking like all of Cloudflare during sportsball matches, since Cloudflare deliberately makes it impossible to block only whichever of their customers are serving unlicensed sportsball streams.

And I think the "Great Firewall" is still a thing.

And IIRC there's a couple times I've heard about countries taking down connectivity entirely during civil-war / major-unrest type incidents.

There is research on actual Internet censorship, worth following the ARMOR IRTF group.