This comment that Riot Maple made about Yasuo's buff

"Yasuo lost a fair bit of his power as we headed into the pre-season, and then got brought down further with Press The Attack nerfs last patch. Leaving him at 44-45% winrate feels quite awful for a champion that has one of the most dedicated playerbases, Not to mention the fact that he's a champion who drops off steeply in effectiveness the farther you climb. giving him even just some power back doesn't feel inappropriate. Referencing all of the things we nerfed on him in the past is somewhat misleading, since you're talking about a time before runes reforged, and he was sporting a winrate over 50% of his games." - Riot Maple

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I just wanna point this out as evidence that he's pretty much saying "One of our most profitable champion has a low win-rate, we need to buff him quickly before people decide to stop playing him and buy his skins."

Riot Maple, this champion is cancer for the lower elos. Not to mention that the majority of Yasuo mains that people encounter are rather toxic and feeding. Giving this buff brings more of these accounts to happen in Rank. This champion ruins the fun in laning and group fighting as is, so buffing him is only a matter of time when 100% ban rate will happen.

Currently Yasuo is at a stable state in my opinion, he isn't "too much" to handle but this buff will make him too much.