The entire bit about direct wires providing the same action economy benefit is blatantly false. The device must be connected to the matrix, and the interface you are using to command it must be connected to the matrix. You can input that command via DNI to another wireless enabled device, or pushing a button or a wireless enabled remote, but as long as you're sending your command out to the device via the matrix, you get the wireless benefit.
I wish that weren't the case. I'd love to see DNI or hardwired connections provide those benefits because that makes sense. But that wouldn't encourage PCs to expose themselves to having their equipment hacked in combat, which was the stated goal of the entire "wireless benefits" mechanic.