Why? Some people like to do world completion, some don’t, why should those who like to do world completion be able to craft legendary weapons while those who don’t, through no fault of their own, are blocked out? What sort of sense dose that make?
I agree, none at all, so obviously there should be alternative ways to earn a Gift of Exploration, but for the time being, while that remains an issue, getting World Completion can be done in a tiny fraction of the time and effort involved in beating a single raid wing through your own efforts, especially if you’re running World Completion with nine other players to back you up, so the comparison is a rather weak one.
How would one earn a Gift of Exploration, if not through exploring? Not being able to achieve things because you either don’t want to play something (either through lack of skill or lack of enjoyment), or you simply don’t have the time for it, is not a reason to compromise the system set up.