It shouldn't take 10 or 20 reports to flag someone for verbal abuse and flaming. It should take like 2. This behavior is the number 1 problem with this game, above any balance issues or bugs. When someone decides to do nothing but spam ping and flame, it literally ruins the game more than any broken champion ever will.
Also, Riot needs to monitor verbal abuse instead of a player tribunal or anything else. I feel like toxic people aren't being reported enough because not enough people care. If you aren't the target of the flaming, you tend to just not care, and that's not beneficial to the community as a whole.
Also, muting them doesn't stop them from spam pinging the ENTIRE game. That is just as tilting as the guy doing nothing but calling you bad the whole game.