Come on guys. Lilypond is not named Lily, the app is not developed by Apple, Apple is not stealing anything, and it has nothing to do with music engraving.
Lilypond is not a brand and not a trademark. It's open source software, and it does not compete in a market. Dear me. Lilypond software has no right or monopoly over the English word lily.
It does not benefit the open source movement to say that any proprietary product is an 'attack' on ones freedom. To say that is just trolling. You may be restricted in your rights, but you are not being attacked. The current trend towards weaponization of language is distressing.
Andrew