Yasuo's windwall vs Zilean's Q is completely unfair

I get the idea of Yasuo's windwall is supposed to protect from projectiles like bombs and I am fine with that as long as it is still flying through the air. However, if Yasuo decides to use a windwall on a already landed bomb, it disappears as well because it is still a classified as a projectile. Keep in mind that after the bomb has landed, it is, by definition, no longer a projectile; a good part of Zilean's gameplay is to block a path with bombs so as to keep from retreating, help out your own retreating, or kiting; Yasuo has 3 seconds to react; Zilean's bombs are so big, it is difficult not to hit it with a windwall and Zillean only has two damage moves; which have a decent sized cooldown so yasuo can windwall basically almost everytime I throw a bomb and it hits an area (Q for poke or QWQ for heavy poke/ kill should you press the buttons rapidly enough as to get the stun).

tl;dr's W stops 's Q after they were put on the ground, making them no longer a projectile by definition but classified as one.

I propose the idea that Riot makes the bomb, when it is on the ground, be classified as a pet for coding purposes that explodes like 's clone, has 0 damage for attacking, is untargetable, and is not controllable like 's ghouls, 's plants, and 's old voidlings and, when it is not on the ground, be classified as a projectile that can be blocked.