Perhaps you can provide some clarification here....? Did you happen to notice the phase response is as good as the frequency response in the measurements provided in the article? Look's like ideal minimum phase response at the LP to me... I have had several excellent loudspeakers come through my room, (e.g. Kii THREE, D&D 8c), some use FIR filtering to correct for frequency and phase and some don't. I am comparing a pair of KEF LS50's to my JBL speakers that are eq''d with Audiolense, both in frequency and phase. Article forthcoming with binaural recordings of both speakers so folks can compare and can clearly hear there is no "weird or unnatural sound" from the eq'd speaker as compared to the LS50's with no eq.
IMO the result of such correction is anything but good sound but I can't argue with what you think. I have heard numerous setups with Audiolense and have owned the software myself.