Earlier quoted context omitted.
Yeah sure, as long as you have a lot of resources for testing widely. Still, if you were to make an analogy you should target for a few devices that represent the "average", just as its done for (most) pop music production.
> if you were to make an analogy you should target for a few devices that represent the "average" For Macs, 220DPI absolutely is the average.
One is hard-put to buy a developer-power laptop with a sub-2K display these days, even in the Windows world, and >2K displays have been cheap on desktop for a really long time.