That said, of all the people you know in the Apple ecosystem, how many people know/do the following: know what an id3 tag is, manage the metadata of their digital audio content, listen to audiobooks. Maybe I'm wrong, but most non-nerds I know don't and would not ever want to think about 1 and 2. Plenty of people who fall into 3, but again all people who don't like or work in tech that I know use audible or the public library or some other service.
I like so much about Apple products, but my big and growing fear is that my needs and the needs of the kind of person who edits ID3 tags are constantly being subsumed by the much larger portion of their customer base that has no need and no desire be involved in anything like editing file metadata.