Why do people complain about Yasuo when Fizz exists?
No other champion is as tilting to lane against as Fizz is. No other champion so completely dominates their lane and niche the way that Fizz does. The fact that Fizz can go toe to toe with every mid lane champion and has no true clear cut counter champion, when Yas can clearly be countered by quite a few mid lane champions. The fact that Fizz can harass you off CS'ing just by being fizz. The fact that you can STILL build full tank or attack damage/on-hit and 2 shot anything squishy.
Now tell me, why do people pick on Yas and Lee Sin when Fizz exists again?