I have experience only with mechanical room tuning not electronical...
I will use a dsp as a tool for room correction but not and never as the main acoustic corrections ...
Then i believe your friend Ed ...
No acoustician work a room with only a DSP correction ...
No DSP can replace room acoustics mechanical controls, only refine it thats all ...
There is a scientific reason for this : the ears/brain work in their own way which workings cannot be replaced by a Fourier set of linear maps ...
This is as i already said why i believe you about analog EQ over purely digital EQ ...
I am not an expert for sure but i know how to tune my room ..
Regarding DSP for speaker and room correction:
The following is from Ed to me at Audible Images in Melbourne FL. I have heard the best sounding system of any showroom in FL at Ed’s. I trust his judgment and his ear absolutely implicitly. The following is what he said. It leaves open the question of the newer forthcoming DEQX vs Trinnov. It seems Trinnov is the best he’s heard. Here it is:
“ Tim,
I have tried room EQ with several different products. Audessy, DIRAC , Room Perfect and the Trinnov. In my opinion the room correction is more destructive than corrective. The Trinnov was impressive in its capability to manipulate the sound in every way. However it did not sound very good. We consistently prefer the sound with the room EQ disabled. I can hear the sound quality change for the worse when it is engaged. I typically hear some grain added and slight glare overlaying the sound. I tend to push my customers into letting me place the speakers and subwoofers where they sound best so I usually do not end up with major issues to deal with. I have used the EQ in some subwoofers in certain circumstances with decent results.
Thanks
Ed ”