> running apps sitting on a pile of compatibility hacks You do realise the only reason iphone retina screens became a thing was to enable double pixel scaling

> running apps sitting on a pile of compatibility hacks You do realise the only reason iphone retina screens became a thing was to enable double pixel scaling because iphone apps at the time were coded to a fixed resolution. That's the definition of a compatibility hack. Of course apple being apple they managed to sell it as a feature and made every person who was happy with a 1366x768 laptop suddenly desire a retina display.