I believe the playstyle of yasuo's windwall is too use it re actively, and then proceed to play around it. Kind of like a Skarner crystal. Since yasuo's windwall can be useless at times, it has a lot of conditional power, just like everything else in his kit.
With how often windwall is up
Just want address this, dont act like it has a short CD. The CD is: 26 / 24 / 22 / 20 / 18 and we all know it is not maxed until late into the game. With a 26 second CD it has a GIGANTIC CD for a non-ultimate ability, and since Yasuo doesn't normally build CDR until later into his build, playing around this long CD is pretty easy.
Wall Width: 300 / 350 / 400 / 450 / 500
Now for my next point on this subjet: Compared to Anivia wall, it is a lot more conditional. Anivia's wall is a 17 second CD at ALL RANKS with a wall width of 400 / 500 / 600 / 700 / 800, that means that at level 5 windwall on yas, you barely surpass a level 1 Anivia Wall's Width. Her CD is shorter then yasuo's at max rank, it blocks movement unlike Yasuo's wall and it has a short knockback if placed correctly. No matter the situation, Anivia's wall can be used for something, where as Yasuo's is CONDITIONAL. Anivia can place it however she wants, unlike Yasuo which has a set distance and the wall SLOWLY MOVES FORWARD, so camping it is hard; where as Anivia can just sit there spamming. Anivia's wall can also me used for combos EX: Vayne Condemn and Poppy E will act as if it is terrain. Anivia's wall also gives people an assist for it's use, where as Yasuo's doesn't. She can also stop backs with it.
HOWEVER THE BIGGEST POINT ABOUT ANIVIA'S WALL IS:
The wall deals 1 point of true damage to enemies it knocks away.
Yes that is right, Anivia wall does deal dmg. If you position the wall right that is 5 DAMAGE MAN.
I am not calling Anivia OP or anything, I am just brining up the fact that Yasuo's windwall is a little less annoying then Anivia's IMO