I'm not sure what anybody expected to have happen here. There's no truly legitimate use for Hymn: if you don't want to use DRM-encumbered tracks from Apple's proprietary iTunes store, don't buy tracks from iTunes. I don't understand why people believe they have the right to force Apple to sell things on terms other than Apple's.

This is nothing at all like attempts to shut down BitTorrent. Legitimate use is a fig leaf with BitTorrent as well, but it's a real fig leaf: you can download a Linux kernel with it. You can't "rescue" any legitimate content with Hymn; you promised Apple you'd abide by their license when you downloaded the tracks.