Yasuo's been banned in every game i've been in since 10 bans

Here we go again giving anectodal evidence. Can you show me where you are getting your counter play works 9/10 times? other than your opinion that is.

You mentioned skill level. Well if you disect lane win rates for Yasuo against mages plat and above then you can greatly mitigate that avriable since at that lvl of play only like the 20% most skilled total player base is playing, Yasuo wins there more often than not. You can look of the win rates that are posted in this thread or google them.

As I show you in my example, counter play is not always fair. A more ground example is how next patch Riot is coing to increase Rek Sai's new ult hit box because the enemy can dodge it too easily (too much counter play) thus it is not fair for the Rek Sai player (it can go both ways).

I repeat, just because someone is human and can screw up doesn't mean the overall mechanics of a champion are fair, as is shown by the win rates for skilled players.

And lastly, the only way a Yasuo can consistently lose a game is if you win lane against him and then end the game before the 30 minute mark, which without premades working with you is not reliable at all. Look at Yasuo's win rate by game lenght in union with his KDA ratio, you will notice 2 things:

As the game goes on, his win rate increases drastically He has more deaths than most other champs on average.

this means that Yasuo can either stomp lane and win, or lose and farm back up until he absolutly dominates late game because of how hard he scales. In contrast, characters like vayne and master yi have weak early games to compensate their late game potential, and characters like Riven and Fiora need to stay ahead to be relevant because their TF potential late game is not as good and they have to close games by dominating with xp or become irrelevant