Surely that's interpretation? That's why 50 people will play a score 50 different ways.
Like you said earlier, music is a collection or set of skills rather than one thing. Victor Wootton once did a thing at a seminar, where he had the class divide all of music into just 10 parts-style, sound, interpretation, note choice etc. The upshot was that if you are hung up on just one of these ten things, you have 9 tenths still to do.
My point about reading is that it gives a clearer, deeper understanding of music. It's like learning to drive and only doi g automatic because it's easier. I get that it's not for everyone but I find it a big help.
As for your Bonham analogy, you are dead right. Feed it into a computer as a midi file and it'll be rubbish. But the way Bonham played is what made him Bonham, irrespective of written parts. Bonham was Bonham and that's why there's no Led Zeppelin anymore. Even his son can't faithfully play his parts