I'm not sure I entirely agree.
Steve Jobs was definitely portrayed as an iPhone figurehead. His personal image was highly tied to the Apple products. Likewise, movies put leading actors/directors forward as figureheads for the production.
However, I do agree that there is more widespread misunderstanding of how music is made. What I don't agree with is that this misunderstanding is essential to the popularity or enjoyment of music.
I'm fully aware that music is produced and I still enjoy listening to it.
Or take the example of K-pop/J-pop, which is more overtly produced than American music. In some cases, fans literally vote on who gets to be included in the band. Despite the "production" process being in full view, fans still love the music and artists.