Never heard any room correction program sending too much sound to the rear speakers. Do they also send too much to the front? Such programs attempt to adjust levels, phasing/distance, and equalization to provide the best listining experience. They generally provide much more accurate response than doing nothing, and better than by ear or even using simple tools (e.g. an SPL meter). It seems like a lot of people not liking the sound of the programs simply don't care for flat response, adjusting to their own preferences.
Run YPAO and listen to it for a while before deciding.
"After silence, that which best expresses the inexpressible, is music" - Aldous Huxley