Agreed. The ability to discriminate SQ issues decreases with increasing channel count and although I find RC detrimental if I'm critically listening in 2 channel(depending on the RC brand), the latest versions are so good that it takes some seriously critical listening to hear the problems - even in 2 channel. With the increased channel counts of HT, I believe the benefits can often outweigh any of the negatives.On the broader question of "screwing things up" by correcting full range, I see very good arguments both ways, but with a really good speaker with well controlled--nearly constant--directivity, I worry much less about it. Since the reflected sound is so similar to the direct sound, the software won't try and correct a speaker directivity issue, screwing up the direct sound in the process, because the speaker doesn't have any directivity issues the software might measure as a problem and mis-diagnose. As long as it doesn't try to correct every narrow dip or bump (as XT32 doesn't seem to, I can't speak to others) the broad changes to the target curve will act more like a tone control of sorts. Of course an inappropriate curve could sure mess things up, just as you could if you went nuts with a set of tone control knobs.
Just like distortion and resonances, they only matter if you can hear them.