I've been using a shell for many years (doesn't matter which - can't even recall name now) which comes with its own icons. So to me this sounds as childish (ie Apple treating its customers as children who can't be trusted with picking their own icons) - as if my laptop had a set of preconfigured directory names and I could not rename them myself.
It's rather telling that all these people take the concept that icons on their pocket computer are G-d given and immutable, like a law of nature and that the most they can do is whine if they don't like them.