Yes, I agree but it's interesting from a historical viewpoint. With the modern digital altimeters that we have now, the QNE procedure should never be required.
I think it has its origins in that cases of abnormally low or high atmospheric pressure prevents one being able to set the QNH on the older mechanical altimeters as they would run out of settings below about 950mb and above about 1030mb.
So, the QNE would be transmitted to the aircraft, the pilot would set 1013/29.92 and then add appropriate amounts to the runway elevation to derive the procedural altitudes to be flown.