Oh God, here comes the same old crap again
Dynamic range compression is real, a pain in the ears, and it happens on CDs, so Apple have got bugger all to do with it.
If you think MP3s sound tinny, I've got some really good homeopathic cures for electrosmog to sell you, at exorbitant prices for the placebo-addicted. Anyway, Apple uses AAC, which is generally acknowledged as being a technically superior codec to MP3, though MP3 at reasonable bitrates is demonstrably good enough for people who are interested in listening to music, rather than willy-swinging about who's got the biggest woofer. Two exceptions: highly synthetic or distorted music (electro, really loud distorted guitars) and harpsichord. A few problems with hi-hats.
The one thing Apple could improve is the quality of their earbuds, but you can always buy a better pair of phones.
Not that this will convince people who've got too much ego involved with their golden ears and ludicrously expensive electronica. As for Neil Young, what I have to say (as someone who was totally blown away by "Like a Hurricane") is: he's launching a new release on Blu-Ray, so he would say that, wouldn't he.
Now kindly return to listening to music in the inaudible frequency range, but watch out for the bats. Some of them might be vampires. Hey, I can fix you up with an audiophile in garlic: not cheap, but it really transmogrifies the high frequency modulation, too.