Riot “mel is a mid/supp”

Explain how mel could be considered as a support by the game maker ? I understand that some player wanna player her as support (me included) cause we like to made some pick viable in other lanes.

But from riot point of view I found it weird cause she can’t be a viable support mostly cause of her build in execute. In what world you want a bad scaling champion that steal every kills without compensation (like Pyke). For exemple, Senna can steal kills cause she if very late game oriented, but mel is not. It feel bad to steal 20 kills only to fall of hard lategame.

At this point she is just a worst lux supp who increase what people use to complain about lux supp..