QNE is NOT 1013.2 though, that is a misconception. Therefore you don't set it to fly a level datum.
When the ISA mean sea level standard pressure of 1013.2 hPa is set on an aircraft altimeter subscale, the height indicated on the altimeter upon landing at an airfield is known as the QNE.
QNE will always be a measurement of height, not of pressure. In standard ISA, the QNE would be 66' at my location.