Lee Sin really does not need to be able to animation cancel his dashes

For anyone who is unaware, Lee Sin can cancel his W with the second part of Q, or vice versa. When he does this, he can cast his other abilities (R + E) during the dash. This is especially problematic with his ultimate, because it roots the target until the kick finishes.

In the case of a normal Q + R, there's a very short window between his Q landing and the kick beginning where you can use mobility to put yourself into a better position, stopping him from kicking you away from a turret/into his team. In the case of a normal Q + W + R combo, there's another window during his W where you can re-position or move away before the kick begins.

However, when he uses an animation cancel, the kick becomes unavoidable.

If he animation cancelled with W -> Q or Q -> W, the kick roots you before his Q lands. There's no window to use your mobility; if you use it before the root, the Q follows you. As an added bonus, this combo seems to almost always kick you towards the direction Lee Sin came from.

Why is this even still in the game? It honestly should have been removed long ago.