Read morethey go vs other players who don't know how to play against them thus they get an easier life inflating their win rate
This shouldn't matter. If the entire population is bad at playing against champion X, which leads to champion X winning 55% of their games, then the result of that is that champion X is winning a disproportional number of games and is, on average, overperforming to an unacceptable degree.
Riot doesn't balance around what the game "should be" like, cause that'd just be a guessing game, they balance based on what's actually going on in the game, and in this case, that'd be champion X being unreasonably strong.
I've once seen a comparable argument about Cho'Gath's 54% win rate, which basically went "Cho is really old and very simple, so it's to be expected Cho players have an advantage over more difficult/newer champions whose players haven't yet been able to master them like Cho players mastered their champion."
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Great post.
This is the argument everyone needs to read when they go "XD champ easy."
If Riot wanted to balance champions so that they were all balanced on 10 games of experience, Yasuo would probably stabilize around 60% win rate. Turns out Yasuo players are just better than other players but the game's on hard mode because he's balanced around them being so good at him.