Hi - I assume you are not out to take the mickey out of the rest of us so,
It’s about a really nice system in a room and you should be able to discern the qualities of a really nice system in room.
in order to do that, you have to hear the qualities of the system. Not all closed spaces are ideal for music --
It has to do with the acoustics of the venue - but then, you are a musician so you know that! Concert halls are "treated", often to great expense, in order to improve acoustics - no doubt you know only too well how much better some venues sound than others!
Your listening room is a mini concert hall; the recording (and mastering thereof) and the system reproducing said recording, try to provide a sonic simulation of the recorded (and mastered) musical event. I am sure you realise that too.
If the room acoustics aren’t good, you won’t hear the system as well and won’t perceive what the system’s real performance can be. (Likewise, if your speakers placement is mediocre.).
Your statement seems to be more a personal philosophy than anecdotal or otherwise :). Regards.