It is. The Human Sphere is 350 light-years across, whereas the Galactic disk is ~3,000 light-years thick and Sol is only about 75–100 light-years Gnorth of it. Colonies in the Periphery in the direction of Sculptor are in the plane of the disk and their Milky Way might be 25% brighter. Colonies in the Fringe in the direction of Cetus are about half a scale-height further from the plane; their night skies might be 40% dimmer on the great circle parallel to the Galactic equator, with their Milky Way slightly more offset to the Gsouth. The Gnorthern sky would have fewer stars than the Gsouthern sky as seen from a planet in the Fringe in Coma Berenices, Canes Venatici, Boötes or thereabouts., but you would have to do a count to notice it.