Yasuo's difficulty meter makes no sense to me
Difficulty: 10/10
Just asking, why? He is resourceless, and has easy time farming. Using E to engage and escape through waves don't need that much thinking. W and his passive shield makes that he doesn't even have to dodge every ability. His Q may be hard to hit vs ranged champs, but overall Yasuo is pretty safe champ to play. On the top of that, his ultimate is just ridiculous since he can rely on knocks made by allies.
On release, Yasuo's difficulty was 8 as the picture below shows (I agree with the insult). Why and when was it raised? What are the reasons that makes Yasuo one of the hardest champions to play?
http://st.elohell.net/public/chill/e542da1f855f03ea435de8dd813a41c2.jpg

, where you pretty much just have to right click to deal 90% of your damage.
are all champions that deserve 10/10 difficulty