New released champions should not be ranked for a while
Messed up the title but you get the point. Ok I get the PBE thing where you test champions but its PBE no one takes that thing seriously you try out new champions and have fun for bot parties involved.
In ranked its a different story. Someone locks in a new champion that they only tested out in PBE against people who aren't trying but in RANKED they are and the person who only played a certain champion plays the champion Support and gets smashed.
PLEASE when releasing a champion disable them for a bit before they can be played in Ranked ! Thank you and Have a Good One