Telling people to KYS is the fastest way to get punished
I would have thought this would be obvious to anyone with a lick of common sense but evidently it has to be said. In recent memory I've had now 3 people who think this sort of behavior is okay and all three of them received punishments due to my reports and I got the nice little popup informing me of it within 20 minutes of reporting them.
That sort of verbal harassment is a one-way ticket to punishment escalation along with homophobic, sexist, or racist language, or in the case of the last guy I reported many of the above at once.
I'm proud of Riot's stated strong stance against this disgusting behavior, and I hope you are too fellow summoners. So don't think for a second your reports aren't valuable because every person that presses that little button next to a toxic player's name tells Riot "We agree that this behavior is unacceptable" and the system gets better and better at removing them from our player-base should they refuse to reform.
Thank you for taking the time to read this little rant.