Every form of art has boundaries
You are right for sure ....But at the root of creativity in the internal "physiology" of the creator, the boundaries melt in one complex creative gesture...
This is how opera was invented coupling theater and singing...Or this is how poetry as an oral artform and much later as a written art form is born from speech and music or this is how speech is born, before poetry itself was born as a separate art, speech begun as a complex rythmical and melodical gestures set BEFORE music as a separate art form ...
The boundaries between arts and sciences resemble more to the skin of a creature under metamorphosis than to static boundaries through history and through creativity ...Some people perceive synesthetically... Etc... With Artificial consciousness science in his birth cradle we must understood how was orchestrated the cosmos to manifest consciousness... Here we must read the book " nanobrain " by this Indian genius who identified the microtubules as quantum computer few years ago and created the first artificial brain :
https://twitter.com/anirbanbandyo?lang=en
Goethe created the physiology of colors science by going on in spite of these "boundaries" separating optics as a physical science and the color qualities, and he created then their relation to the perceptive physiology and a new science ...This is why Edwin Land admired him so much and many others ...
Goethe created the morphogenetic and dynamic description of mammals or plants trespassing the boundaries separating the static objects and the static perceiver ... All his method is described by the physicist Henri Bortoft very clearly in three books ...
Music and Audiophilia are two separate issues. One is art the other is technical with the exception of speaker enclosures and faceplates. Any artistic intent is purely visual.
This is not even wrong then you are right in a way ...But without acoustics which is also a craft not only mathematical equations and a controlled subjective experience and set of experiments not only a science; without acoustics and without musical knowledge, audiophiles are lost in marketing and lost in an audio vocabulary which has lost his roots from the acoustics vocabulary as well as from musical concepts ...
Distinguishing between audiophiles and musicians and music lovers is certainly legitimate but separating these three activities may make them more and more meaningless ...