You're on to something, I suppose, but the conservation of momentum does allow for travel in a vacuum. The matter ejected by the thruster pushes against the rocket.
Part of the value of the Switch is being able to put it in the dock and connect to TV. It's a lot harder to co-op when you only have the little screen.
the only twisting and yanking I did was pulling the wires out of my breadboard when I was done with it!