Vel'Koz E interaction with yasuo windwall

I just watched my brother play as vel'koz against yasuo now yasuo was bad at hitting tornadoes so it was pretty easy but as i watched more and more at one point i saw that E from vel'koz can be blocked by windwall. It's really stupid because e is an AoE spell and not a projectile(yes there's a small beam of void coming from his arms but i don't count it because the circle is there before he starts that little void beam animation so that is just so he looks better in game) if it wasn't already easy for yasuo to disable vel'koz R dodge w q e and block w and q he can block for some stupid reason e So i ask just to make it an non projectile because it isn't if you don't fix it then make Viktor R and W ,Asol W and Passive, Lux E second cast , Brand W , Akali W and etc. blocked by windwall because all of those seem bullshit to be blocked right? just like Ornn's slow ass ult