I'm having a hard time understanding why there needs to be a unified mission in audio.
We all have different ideas about what's important to us personally. There are a LOT of folks who hinge their notion of realism to soundstaging and imaging. The "old" gear couldn't do anywhere near the precision possible today.
That's not my cuppa but I embrace the opportunities and choices each of us has. Of course, this galaxy doesn't have a roadmap and great confusion abounds. I just don't understand how having so many choices available is a bad thing. Figure out what trips your trigger and pursue that - don't sweat the hype that creates its own demand (you).
Yes, the room acoustic/speaker equation is a tough one. Bigger speakers are always better, oh unless they're too big for your room which you won't know until they're placed - so take a flier!
There are too many dimensions of "truth" and they haven't properly been prioritized. IMO, the core values are coherency, dynamics, and tone. Beyond that, it's gravy. IMO, get those things right and the complaints about realism melt away.
You leave alot of questions. If there are Many dimensions of "truth", then the vast majority would not prefer your interpretation, or any reviewer's interpretation. So why have any reviewers? We don't need you. So why shoot yourself into extinction so to speak?
Having so many "truths" opens up some dangers. First it would give an unscrupulous individual or reviewer the option of manipulating definitions/descriptions etc to suite his goals. (We have already seen definition changes in some manufacturer's ads. Always for someone's advantage and minipulate the perception to those purchasers.)
One may sit anywhere in the audience and receive his individual dose of reality, or "truth", the positioned microphone only allows one version of the "truth" at best, unless one is able to move the mic to one's sitting position.
As one moves and sits farther away from the mic, the spacial cues etc changes. This cannot be duplicated by changing the tonal balance of the audio system. So one is creating his own music. It may be to his liking, which is fine, but it is not the "truth" compared to where he would be sitting in the actual venue.
One might say, the recording from the mic is not accurate either. Should we stray farther away? Or, why not continue to work towards more truly accurate recordings and reproduction? We should not stop imo.
Having many "truths" allows one to comment his position/belief in one post/string/forum and then state an entirely different position/belief on another post/string/forum to fit the audience. Having multiple "truths" allows one an "escape" excuse while slyly desparaging one product and promoting another. How do we know which is truly superior? Any questions, hey it is just my version of the "truth". This is one of the very ways a shill/scam artists work. I would veare away from that model to be safe. We need to stay as pristine as possible.
Another result is that the rogue reviewer can change the perception of a product by simple phrase minipulation(s); therefore enhancing sales. Very subtly of course. On the contrare, with so many 'truths" how can one desparage any product or give any recommendation? Anyway, no one could effectively communicate a description when "truth" has so many meanings.
Of course, the real life music experience involves all the possible attributes, tonal balance, attack and decay times, dynamics, transparency, soundstaging etc in their proper relationships.
I hope this gets some thinking more deeply and the ramifications involved.