those spacers hes talking about dont move the wheel OUT, they just adapt the fox axles to make the sn rotors hub-centric instead of lug-centric (the sn hub is a larger diameter than the fox hub). basically its like a bearing race that slips over the fox axle hub, and the sn rotor slips over the spacer, centering the rotor on the axle, and the back of the rotor still sits on the front of the axle flange. iirc you can also get aftermarket fox-length axles with the sn hub and lug pattern and avoid using the ring spacer.
the washers between the caliper and the bracket are to center the caliper over the rotor, some need more than others (production tolerances). even a lot of the nrc brackets need washers like this to line them up right.
That makes a lot more sense. Appreciate the time you took finding a way to explain that piece.