I mean yeah I guess. But why go through all the time and expense of creating that legal exemption, when every other method of acquiring human flesh is already illegal? Plus it creates a future possibility that a survivor of a plane crash or a shipwreck will have to go to court and justify their actions.
Surviving a situation like that is traumatic enough. Making that decision will haunt them for the rest of their lives. Why put them through even more trauma after they’ve been rescued?