Well, sure but that has nothing to do with approving a launch site. If Starship was used to maximum extend it would basically replace the airline industry and

Well, sure but that has nothing to do with approving a launch site. If Starship was used to maximum extend it would basically replace the airline industry and it would have about the same amount of impact. If that is acceptable to society depends. Potentially this can be made reusabilty in the future as well. At least its easier to make methane then to make jet fuel.