Yasuo's Ult

Why is it needed for Yasuo's Ult to place him straight out of Towerrange?

I had a game today, where the Tornado hit me as i stood right next to my tower and Yasuo himself was in towerrange (Tower got to shoot him once after the tornado hit). He popped his Ult and dashed sidewards(!) out of Towerrange and proceeded to Ult me an afterwards continuing with his dash to kill me. For resetting the Toweragro with this safetynet in his Ult, he did'nt die of course.

This is just straight BS. There is absolutly no reason for this to happen. Hell, even his Ingame-Model was out of range of ever reaching me with his sword. If he ults me anywhere else but under my tower the ult is right upon me, so why giving his Ult a built in safetynet?

This is bugging me for a long time now. If he would have been placed right upon me, he would have died during his ult or right after it. I would have survived it. But for this mechanic it was the other way around. Every other Champ has to think about diving early or has a skill he has actively to use to get to safety except for Yasuo. This is one reason why i just plain hate playing against this Champ. Straight unfair Skillmechanics.

I would apreciate Rioters and of course the Community to comment on this.