Never put all your eggs in one basket..
If you haven't experienced it you might be wrong when jumping to conclusions.
I don't know that software. I suppose it works like YPAO of which I have tried on an older Yamaha flagship receiver. I'm pretty sure it only did one single measurement and it sounded like ass and was all over the place with different settings even if I did another cal. at the same spot right after.
This is from the Dirac Live 3.0 manual-->
"Avoid making measurements in too small a space. Even for the "Tightly focused" listening environment, it is important to spread out the microphone positions in a sphere of at least 1 meter in diameter.
Too small space will result in over-compensation, which sounds very dry and dull."
Dirac has three choices of listening position spaces. The "Tightly focused" may suggest by name, that you measure close to the main listening pos. But that is not how you're supposed to measure acc. to the manual.
Also from the manual-->
"Tip: A minor change to the target curve can dramatically change the perceived sound quality. It is therefore recommended to edit the target curve with care and awareness. You can play around with some different target curves by exporting different filters to your device and finding the one you prefer. Save your project often to give yourself the latitude to make adjustments without committing to any potential negative side-effects.
If you experience phase issues from an exported filter, you may have measured too few measurement points or measured in too small an area"