Think of it on the million/billion year scale. The pole is oriented N/S or S/N for 99.99 percent of the time.

Not my field anymore. My volcanology classes gave way to petroleum and environmental.

As a geologist, in school I always postulated that hot spots were a function of the magnetic field. Rotation resistance provides the field but the field 'channels' a portion of the mantle. Tit for tat.