I think everybody cares about high DPG typography, they just rarely have a choice in the matter. If you ask Joe bloggs on the street to choose the more readable text that they'd prefer between a display from 2001 and 2010 they'll choose the 2010 one every time. Nobody sells a cutting edge laptop with a lower screen resolution, so it's never a choice somebody has to make, so nobody really knows it's a thing, explicitly.