Jinxylord pretty much admited that favoritism is a thing at Riot
Here's something to think about. League balance is like a ladder. There's ALWAYS going to be a popular champion that you see a lot at the top of the adder. When you nerf bat them off the top, another champion is likely to take their place. If it isn't Jhin it will be MF, or Draven, or Kai'sa, or Jinx, etc. A good question to ask is, "who would you rather see at the top of the ladder? Who makes the game best when you see them in your games?" There's always going to be someone who's played the most.
hold on
who would you rather see at the top of the ladder?
Who? i
wonder
who
indeed
instead of nerfing op champions and buffing weak champions to make the game different every month, you guys just let whoever you like sitting on the top for months before taking actions after that said champion reaches 50% ban rate because people are done playing against them

understand that "fun to play against" is subjective, it will never be fair for the entire playerbase to let a set of champions remaining at the top
I think Ashe is the adc that is the most fun to play against and deserves to be meta, bruiser mains? they absolutely HATE Ashe and would permaban her if she were Meta. Yasuo? he has 50% ban rate in plat+ why aren't you nerfing him? People hate playing against him while I don't because I main Lucian, playing against a champion is purely subjective
you should NOT balance the game around that, nerfing/buffing champions does not have for goal perfect balance it has for goal to not let the game remain the same
if a champion is popular because he's fun, that's fine Jhin has 52% win rate and 30% pick rate
how could you allow your player base to lose more games against a champion when said champion is played in 1 game over 3?
even 