And don't you think its a strawman to compare only being and to install "" approved "" ($100/year for apple) software to a seatbelt? There is no use case for not wearing a seatbelt. That is not true for being able to install software.
But most reasonable people agree there's no tangible use case to not wearing a seatbelt. There are infinite tangible use cases to using software outside the app store, that reasonable people can all acknowledge.