PorezPorezych  filed a deletion request for multimc5-offline :
This package contains MultiMC with support for pirating Minecraft. Pirating Minecraft is illegal under the Minecraft EULA. Additionally, this package is named MultiMC while containing patches that prohibit it from being called MultiMC under the MultiMC license.
Request #24359 has been rejected by ainola :
AUR packages are buildscripts and not pre-built packages; therefore, we are not bound to any EULAs or third-party licenses. If there is a legal issue with the upstream software, that should be managed on the hoster's level (in this case, GitHub).