I actually appreciated the 4" display introduction ....That post was actually very serious. Any "snark" was directed at a certain "3D touch hater" (see earlier posts in this thread)
The iPhone 5's 4" screen may not be a big "innovation" but a lot of work goes into designing a new screen/body, just like the work it took to make the 3D touch screen that someone was trying to pass off as a throw away gimmick.