Seems dirac is mostly for ht
I have no idea how you can draw that conclusion from the posts in this thread. Almost all of them are using or recommend trying it for stereo. I use Mini DSP Studio with Dirac Live for stereo listening. Digital out of my cd player to Mini DSP. Digital out of Mini DSP to active speaker system. As stated above, there is a learning curve, but it is very worthwhile for stereo.
I am not sure why you wouldn't at least try it if you have it. Then you can decide for yourself if you like what it does.