that statement seems to me as if you are the only audiophile that do that.
I dont doubt that most audiophiles plays with room acoustic in a way or in another ... I am not alone ...
But there is difference of level and control between putting panels on a wall and designing and distributing resonators in a room and all other mechanical possibilities without forgetting the electronical one as EQ and DSP as tools ......
And reading threads i know for sure that many audiophile confuse acoustics with room acoustic , and not only that but reduce room acoustic to a few panels installation ...
One thing is sure : "musicality" is determined by the relation between the system/ room way more than by a gear upgrade in most case save if a piece of gear is way worst than the other pieces ...
Musicality which you claimed is only a subjective arbitrary taste is precisely determined by the control of all acoustic factors ...Not only by the amplifier design etc ...
I deduce from my experiments and reading threads that more than half of audiophiles at least ignore the huge impact of acoustics conditions and controls over their gear fetichism ... And they call their gear fetichism their taste and they claim that it is the main source of musicality , their gear choice branded name favorite win as being the most important factor of S.Q. not acoustics ...
musicality is not only a subjective perception it is an objective set of correlated conditions and controls parameters in the system/room ...
As for acoustics basics , electrical noise floor control and mechanical vibrations controlos together are on par in importance with gear choice at any price ...I spoke about perceptual impact ...
The reason for that is simple : most people dont have the dedicated room to play and learn with and the gear user manual is simplest to peak into and understand that the very complex concepts of acoustics ... 😊
Musicality is characterized as a mere subjective taste only in this case of acoustics ignorance ...
Musicality levels are acoustical states of a system/room under controls at any price....These controls depend on parameters not on taste only and essentially ...
It takes an acoustician to observe the level of acoustic information degradation caused by crosstalk between all stereo speakers nevermind their price , gear designers when they observed it, proposed only very partial solutions ... Dr. Choueiri solved it ...
This has noting to do with taste and is at the core experience of what musicality is about : timbre experience, immersiveness and spatial dimensions of acoustic information ...Nothing here is about taste ...
Acoustics as medecine is grounded in science but own a heart : an artform and practice ...