Major Minion Bugs *still no fix [Gameplay]

So as you can see in the post above minion block can be frustrating game altering and sometimes impossible to fix in game. In short, two or multiple minions can completely trap the character in a never ending cycle or buggy moment that can only be fixed by someone killing the minion (as seen above) or by flashing away from them. The worst is when minions lock you under a tower and end up getting you killed. In fact, it does not make much sense why minion block exists in the game in the first place. Minion block does not add any value to the game other than benefiting champions like Kassadin that do not have minion block.

In order to replicate this issue it is rather simple. 1. Just go into practice tool. 2. Kill and inhib. 3. Walk into a group of minions 4. Repeat until it occurs. (this may take a few tries but this can happen in any phase of the game)

This issue occurs around once every ten games. It mostly happens when someone tries a turret dive or when trying to siege a nexus with baroned up super minions.

Before I get the this is just a mechanic of the game response that I have only seen once in the past by a Rioter. My question to you is why? Not only does it frustrate players ruining entire games. But no one enjoys being trapped by minions. Not only does the physics make little to no sense (making larger player models more likely to be pushed by minions despite the power they would have in each step), but it does not add any value to the game. Legitimately what mechanic does it add that makes the game better. Most of the time it occurs it is impossible to avoid (happening to even the best players) and it is impossible to predict when it happens. So I ask you all-- Why is this a mechanic in the game?