Yasuo waveclear and safe laning simply too oppressive.
I am finally at that point where i can definitely deal with a yasuo in lane, i know how to trade and punish his weaknesses, etc predict movements whatever. its fine.
Yasuo is a great champion in my opinion and his design is fine. he's fun to play for sure. But his lane phase is just too much. his wave clear while being resourceless and having two ways of dealing with harass is just too much in lane. (flow and windwall). this allows him in matchups where the enemy laner is playing well and punishing him to simply fast push a wave to tower and force enemy laner to use all their mana to clear the wave to CS. he also gets time to clear side camps and expand his CS lead during this time. he then comes back, does the same thing. and before you know it, the enemy laner will be out of mana and have to back. he then fast pushes another wave and gets tower damage. rinse repeat.
yasuo pre-shiv is strong, but not overly oppressive and his wave clear is not insane, but once he gets the shiv, without jungler interference, he is basically going to auto win his lane CS wise. even in the c9 vs AHQ game with professionals, incarati0n heavily out farmed westdoor. granted, it was a bad match up for west door, but yasuo was able to just keep hard pushing in and there wasn't anything westdoor could do. even heavy wave clear champs like lux, twisted fate, ziggs, will eventually run out of mana.
and never mind that that yasuo can push super fast and then roam to snowball if you are playing smart and snowballing him yourself.
I mean I don't know how you remedy this to be honest. maybe remove or reduce damage to minions on the E dash? reduce damage to minions for his Q so he can't just spam dash Q, aoe crit? i honestly have no idea. but his ability to push a lane almost completely uncountered while also being able to duel quite well and outplay makes his lane phase feel honestly too oppressive.
his raw damage vs champions does not feel OP, but his utility to basically do whatever he wants in lane does.
are the worst to lane against.