"nickgers" is not a bannable word?

A week ago I was playing a normal game and someone on the enemy team called some people "crying nickgers", obviously he meant to say a specific n-word. To this day he is still playing normally? So does that mean it's ok for riot to call people "nickgers"? [https://imgur.com/6QuqhRD](https://imgur.com/6QuqhRD)
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