Yasuo actually has more counterplay than you think
I'm going to compare Yasuo to an assassin because I can. They're both squishy and do tons of damage. #DEALWITHIT. Anyways, an assassin can steath and point and click on you whenever they feel like it, and they usually have a SAFE way of bypassing your frontline (stealth, untarget ability, etc). The ONLY way Yasuo will ever touch you is if you're standing near your minions or your allies. If you don't want Yasuo to dash onto you, don't stand near your minions. It's that easy. Furthermore, he relies on a skillshot for damage (which has an EXTREMELY short range btw). And the only way he can ult you (not counting ally abilities) is by landing a skillshot (or by dashing onto you and using the knockup). Having said all this, the only part of Yasuo's kit that doesn't have counterplay is windwall. But the ability has a super long cooldown, so you have PLENTY of time to abuse him while he waits for it to come back up.
TLDR stop complaining about Yasuo. We have so many other champions/abilities in this game that have ZERO counterplay.
to an assassin because he isn't one so obviously he won't have some of the mechanics that assassins have and you shouldn't judge balance for that reason. That's like if I was trying to compare a Control Mage
to a Burst Mage
which are different and can't really judge balance because of what they don't have over the other type of mage.
) he can just build tank after that and still have a lot of damage thanks to 100% crit.