That is exactly why they changed it. It just happens that the group-think in this case was right. ;) I would say "...surrounded by a hood with a center that is other than the tip of the front sight post".
I don't care to "argue" about it either. A front sight post that is not centered in the front sight hood will produce a different POI depending on whether the hood or the tip is centered in the rear aperture. This seems to me to be a basic fact, which could easily be explained diagrammatically.
If you are able to discern the difference between the two and make use of it, drive on. But the Troy sights, and any other hooded or semi-hooded front sight, where the elevation adjustment is made in the pin at the front sight does not operate the same way as the HK sights (or, from what I can tell, the M249 sights) and does not produce the same results downrange.

