Unfair Chat Restrictions

Has anybody else noticed that you will get a restriction for flaming someone who is actively trying to lose the game. I don't necessarily think that's fair. I understand, that we shouldn't be toxic, but this isn't exclusive to me. I know several people who were restricted for getting upset at and flaming people who would do things like literally not walk past krugs because they were salty about how they lost their first tower or because a teammate decided that they were going to continuously dive 1v5 (none of whom to the knowledge of these players received any kind of punishment). I get that it's a very hard balance to achieve, but you shouldn't be banned for flaming people who are trying to lose the game imo.