@dalias@_L1vY_@lauren Correct, I do not foresee a way for them to really destroy NetNews and other highly-asynchronous communication networks.
"The (Use)net interprets censorship as damage and routes around it" line, essentially.
They would most likely manage to kill ActivityPub, because most of its implementations have little to no tolerance for disruption, have garbage support for transport-diverse networking and do not properly support #AsynchronousCommunication... but a lot of other options, some newer and some a lot older, do have very good support for those things.