Oh no, this champion is completely fine, I don't know what you're talking about tbh.
It's not like he gets like 10 years of immortality with his windwall.
It's not like he has 10 milion flashes thanks to your own minions.
He's definitely not one of the AD assassins that made all immobile mages only playable as a damage-dealing support.
It's not like turrets ignore him when he's ulting.
It's not like he negates your 1 ability thanks to his shield
It's not like he gets free crits thanks to his another passive (10 passive effects btw)
It's not like even if he goes 2/10 he can farm up and still be a huge threat in late game.
I could continue but I think this is enough. It's funny how you see boards spamming nerf Yasuo and Riot pretends like it's not there.