Hm who you CC tends to depend on who you are. If you are someone like Ahri/Vi/etc then yeah you want to use your CC on a squishy because you will be looking to blow them up more often than not. However if you are a Janna/Nami/etc then it's more likely you will be using your CC on whoever is attempting to come after your carry, which more often than not in team fights is either assassins, tanks or juggernauts. This also applies to you The Sword Dancer, and your thread that attempts to say CC isn't as strong against other champs. That is complete garbage, because this entire game revolves about CC either CCing a target to blow them up, or CCing a target to save your allies. CC is the only thing in this game that competes with mobility for strongest mechanic, and yes it does affect everyone just the same, with the notable exception of Irelia who is like the only person that can get to 70%ish tenacity.
Your jungle argument is one that effectively describes bad Yasuos. Good ones won't only pull minions to jump with they will Windwall to gain vision and then jump over walls with it, you can do this with Raptors, double golemns, and I believe gromp and both red and blue at specific points. In the end when you know the locations Yasuo's chasing in the jungle is just as strong if not stronger than chasing in the lane because of this type of thing.
I never said Yasuo was the only one you counter pick, I said that even the most broken champions of all time had match-ups they where bad against and could be beaten with. It doesn't suddenly change the fact that they where broken and needed the changes they got. Yasuo is broken by design he will either be oppressively strong, which he is now, or completely worthless, like he was a bit ago, with zero in between. No matter what state he is in though he will always be toxic to play against with a play style that leaves opponents not feeling "out played" but simply "out kitted." It's one thing when you see an Ashe dodge everyone skillshot thrown at her while dealing a ton of damage and kiting because she is a beast at orb walking, it's another thing when you see Yasuo dodge every skillshot because he has a zero CD dash that makes targeting next to impossible, or Windwall out right blocking it. One was great play by Ashe, the other is an abuse of a toxic mechanic that no champion should have access to.
16:22 you see the text pop up that openly admits that "with 2 items he hurts" and that even if he is 1/6 you still have to focus him regardless. Frankly no other champ that is that far behind requires focus, but then again no other champ is crammed so full of free stats to act as a crutch for them.
I've actually see it several times, including one of my own games in which myself as Maokai and my jungle Olaf camped the shit out of him so hard that at around 20 minutes he finally go this Statikk while I was sitting on RoA/Deadmans/Frozen Heart. Even with the gap he could still 1v1 me, ended up doing the most damage of he game that saw him get a pentakill. No champion falls that far behind and then comes back off of so little, except Yasuo.
I've said it several times but when you have to cram a champion design full of so many things including massive utility between 2 CCs, a wall that blocks all projectiles, unlimited mobility, free shields, give them CDR off of atk speed, AND double crit chance, it's time to accept that the design is out right flawed and should be abandoned, and that is exactly where Yasuo finds himself now.