I think that it's time we realize Yasuo was a huge mistake

There's no bandwagon, it's just an observation of mediocre game design at its finest. Yasuo is a champion designed to have a kit full of make-ups and get-out-of-jail free cards. He has a kit designed to invalidate the idea of being set back. Yasuo is a champion who can play from 0-15 and still be a pentakill threat.

"Oh, you're taking harass and can't dodge? Here's a free shield so you don't take as much damage, don't worry, you'll dodge it next time!"

"You have no move speed or slows and can't get in range to do any damage? Here's a dash that you can use as many times as there are targets so you'll always be in range!"

"Don't have enough gold for your build? Don't worry, here are some free stats for you so you don't have to worry about being behind in gold and items."

"Your a melee champion who needs to be able to CC and deal damage from range? Here's two ways to do a knockup and an ultimate that teleports you to their location if you hit it! Also, we made the hit box really wide so it's harder to miss."

"You don't want to get hit by all of those skill shots and auto attack damage, but can't be bothered to deal with what all assassins have to? That's fine, we'll give you a wall that blocks all of that from hitting you for several seconds."

Do you see a pattern here? Like it or not, Yasuo is designed to essentially be a spoon-fed champion. When a player can't be bothered to do anything for themselves and can't be bothered to deal with the risk that all assassins have to deal with then fighting other champions, they give him tools that make it all but impossible to lose.

The problem with Yasuo isn't that his damage is too high or that his shield lasts too long or even that he gets double crit. The problem is that the only way to fight a Yasuo is to pray that he makes a mistake. Yasuo is a champion who was designed with the idea that he can outplay anyone. You can't force a Yasuo into an unfavorable situation because Yasuo will always have a response to it. Unlike almost every other champion in the game, Yasuo can only be beaten if the player themselves screws up. On every other champion, it's possible to put them in an unwinnable scenario simply by taking advantage of their weakness'. Yasuo doesn't have this issue. You can't put Yasuo into an unwinnable scenario because the mechanics of Yasuo prevent that. To fight a Yasuo, all you can do is hope that he screws up and gives you the opening you need to deal with him. If he doesn't make those mistakes. If he doesn't give you those openings, you cannot beat him. Period.