you can dodge e+q through several means. if you see has has built tornado and is going to dash along your minions/teammates to you, walk away from them. Also, if you walk into him/dash into him while he is dashing into you, he will dash past you and miss the aoe q as his dash is a fixed distance. late game, if yasuo is able to get on top of a squishy safely, yeah, they're probably dead. with the items he's built, why wouldn't they be? also, he is incredibly prone to point/click cc and will die in a similarly fast fashion the moment it lands. yasuo reaches 100% crit chance in 2 items. now, other adcs reach it in 3, so those who have an issue with it now have even less of an argument against it. yasuo deals 180% damage on a crit as opposed to 200%. that is a hefty amount of damage lost especially later on in the game. yasuo is an insanely high risk champion who, as of late, has a very hard time capitalizing on any high rewards unless the enemy team lets him. the aforementioned combo is okay at best, on top of it. (you can auto attack before ulting.) there are several other combos that are significantly harder to do (your ping plays a hilariously high factor in whether or not you can pull them off consistently, hope you have ethernet!) that are almost mandatory for success in certain matchups/vs players who really know what they're doing vs yasuo. tryndamere with PD/IE will kill your squishy champ just as fast (faster if he crits every auto (and he will with full rage)) as yasuo with PD/IE the moment he gets on top of them and both are completely eliminated from a fight in the exact same manner -- pick a champion with hard, targetted (non-projectile) crowd control and click on him. there's no shortage of it in the game.
tldr yasuo isn't strong at all, there is a world of counterplay to be had vs the champion especially wrt to his E+Q tornado and stripping power away from him right now in any area would probably just lead to yet another gutted, useless champion being present in the game
and while you might think that's cool because you don't like playing against them, for all of the people that do enjoy playing the champion even when they're not very great, it's pretty lame.