There's still plenty a central authority could do, for example (1) banning mesh equipment altogether or (2) requiring that nodes in the mesh implement the gover

There's still plenty a central authority could do, for example (1) banning mesh equipment altogether or (2) requiring that nodes in the mesh implement the government blacklist (and they could run nodes in the mesh to audit compliance). Pretty sure you need something more than mesh networking to make this work--you need an anonymous routing protocol so nodes in the middle don't know the address of the origin or destination nodes.