Almost becoming a war of religions. Both sides think they're right and each side will get heated in their beliefs. (Saying belief isn't meant to goad anybody, I only mean to say nothing has gone to court to argue interpretations of the law for each side)
It's not a concern of the users as we're not creating the packs. Nor should we be converted in martyrs. It's up to the mod developers and modpack developers to hash out any disagreements. Much as the public has no stance with the publisher of books and their authors, it's an argument between them not the readers. So all the holy zealots, paladins, and lawyers may put the arms to rest, pickup a mouse / keyboard and join the rest of the community in enjoying the mods.