I understand what you mean but in a sense it's not correct. I am just now at the very end of a manual install with a huge modlist behind me and this mod is only this mod which has required it. Some other mods make use of it, yes, but they have options to install a version without the requirement as well, but the mod will then use only vanilla animations. Afaaq the djinni companion is one of those. A kit mod by Ulb also (bear walker).
Also keep in mind that not everybody can install infinity animations (like mac users) and some do not like to patch and modify the BG exe for just a hen to be brown (like me). I don't think it is a mod that everyone has. You even need to change the windows codepage to install and play it. I doubt many does that. IMHO if it's just a hen, then not even a new component would be needed, just the reverting of the hen.
Well anyway I just wanted to state my case and make you think about it.