Hi there.

Plates movement has pratically no relation to the location of either poles and the fact that the north pole is nearly shared between two large plates is a simple coincidence (to the best of my knowledge).
Have a read: https://www.uwgb.edu/dutchs/GeolColB...icBathy-PB.HTM
(this page also has a very good illustration of Earth's plates, as seen from the north pole)