Aw sorry for the misinterpretation. I wrote that pretty late last night in a bit on an insomniac moment. Apologies for the frustration!
It seems your point is about credit to the artist? If the consumer doesn't know the name of the talent, it's now invalid and replaceable?
Ok so most kids think "Star Wars is cool" Not, "Wow, John Williams is a great composer" So could we switch out John for Hans Zimmer and still have 'Star Wars'? I don't think so. Good? sure. It would be no where near the same though
IMO music in movies and video games is a very low percentage of the overall experience and of such little significance to most people so as to be meaningless.
It's not a low percentage of the experience at all and i completely disagree with you on that and think that most in either industry (games/movies) would too. In the games industry people say it's 50%. For movies, it's clearly also extremely significant. Know what John Williams charges? It's crazy. Good musicians and composers will be in demand by the people who know how important that is. Audio is 50% of the experience. Watch Star Wars on mute and see how heavy it feels.
So if the consumer doesn't know directly who the talent is, that doesn't significantly undermine their importance or value whatsoever. The people putting the 'whole' together will seek out and pay for the key talent to put it together.
I think your point is that the music
could be switched out,
if replaced by something of equal quality? ?
You probably don't know who designed the engine in your car. Could we switch it out to another engine and you not notice? Probably not. You might have even bought that car because you like the engine. Could we switch it out with an engine of similar quality and you still be happy?
What if we switched out your Led Zeppelin collection with something of equal quality?
To be honest, i still don't get your point

I am a music lover, and you can't switch out my Zeppelin, my John Williams from Star Wars, my Michael Gondry from music videos, my camera lenses. They all have qualities that i seek because of the people that put them together, weather i know all their names or not.
When David Lee Roth left Van Halen, did you still like them?