While the chat restriction system is robbing the average player having a bad day from their ranked rewards, trolls are still on the loose.
Instead of venting anger with words, there is an increasing trend in trolling while being polite in chat instead. This is the real problem with this game. Whenever someone is mad, instead of saying something mean, they stop cooperating with team or just feed. Having such a large volume of games ruined (considering how many trolls there are) is much worse than kids wishing you diseases which is just their natural expression of anger. Thoughts, words and actions and reality are after all very different.