Collision Griefing

I have never seen anything like this before, let alone in a Platinum ranked game. I guess there is a first time for everything.

What happened: at the start of the game, in the first Carousel draft, I moved towards the champion I wanted to grab. I was running alongside the locked Carousel border, just ahead of that champ, waiting for it to unlock. Just like most players do. There was another player standing there. When I tried to go around him, he moved sideways to block me using the player collision. And he kept blocking all my attempts to go around him! Very skillfully too, have to give him that. I had to give up on my champ, go the other way and grab something else. And that player tried to follow me and grab it too.

I don't presume to understand the motivation of every underage jerk, but... what the actual fuck?! Why would somebody do this? That player obviously sacrificed his own chance to get a valuable champ just to prevent me from getting what I wanted. In a Platinum ranked game!!

I've never seen that player before. He hasn't said anything. I have nothing to report him for, technically. The only possible explanation I can think of is that I was the highest ranked player in that game, and he was trying to screw me because he thought that I was the biggest threat.

But this whole situation is bullshit. Why is there player collision in TFT in the first place? What purpose can it possibly serve, other than enabling a new way of griefing? DISABLE IT!!