What is the trigger for the instant feedback function to actually punish?

Chat restricted and im fine with it. I just woke up, he got to me. Its fine, I use pings 99% of the time anyways. But how can I go from honor capsule this morning and fragments the last 3 days for "keeping it sportsmanlike" and having the little flower thing on portrait, to 10 game restriction, without getting any notice the other guy had action taken against him? Flaming since minute 2 in normals. He is better than us all, yada yada yada. The guy was the epitome of everything that is wrong with the league community, and no tribunal punish? Why was he able to get away with it? Even disclaimed **I do not play adc much im learning.
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