Its possible to advocate for the withering of state power without also actively supporting the building of other systems of (private) control.

The problem with Starlink, for example, isn't that its privately-held or connected to Musk, it's that it isn't an open protocol. TCI/IP itself doesn't have this problem.

I generally agree that "cheering for privatization" is not the correct impulse for a libertarian, but "cheering for open protocols" is. And that move is tangential to whether the state or a private entity is the thing you're cheering.