How straight overpowered champs become balanced in ranked

Take champs with a low winrate like Kennen who as much as all you ranged toplaners wanna say hes not, is just a lane bully with a low gold powerspike, very good scaling , decent dueling if the player can kite well, average splitpushing and a godlike teamfight, all while being not that difficult to execute.

But the thing is he isnt fun and this is why he always has a 2% or below playrate. But since his "one-tricks" are the only ones that really feel like playing him his winrate should reach higher like Asols once was but it isnt. And this is because hes one of those champs who a player could ignore learning the game in terms of laning (a lane bully with escape and a stun), farming (cheapest item powerspike and easy waveclear if you are sure you wouldnt be in danger soon), teamfighting (flash ult stopwatch) and he just wins until he reaches the point where players actualy become better than him and know how to out-farm, out-macro him and generaly balanced being a better player and having a better champ.

So in a way if a champ gets too overpowered, unless ur the best of the best it is gonna boost u to a level where u will stabilize at 50% winrate because there just reaches a point where the OPness of a champ isnt enough to carrry ur lack of skill and game knowledge. (This does not apply the other way but to play a worse champ you have to be considerably better at everything than someone who is playing a top tier champ)

This is just my opinion ofc but it makes sense IMO that a low playrate average wr champ like kennen still is fairly popular in worlds and feels so broken to play against in terms of kit design and numbers.