The game design changes all the time. Combo points stacking on the target and not the player never made sense, and now it is obviously a completely outdated concept.
No reason to be so combative, I do just fine on my Rogue. The fact of the matter is having combo points stack on the player instead of the target is just what you said it is, a quality of life change. It will not effect my dps in any significant manner; it is just an annoying, clunky and outdated design that needs to be fixed.
Also, from your post history it seems that you only raid LFR... maybe you shouldn't be so concerned with broken and outdated class design being fixed?