This Probably Doesn't Help Toxicity At All
I just want to leave this here because, at the end of it all, if you're one of these people, you're part of the problem with toxicity in this community.
If you sit there as a bystander and say "I'm not a part of this guy just verbally assaulting you" (mostly because I was playing Teemo) and you don't report this guy for this kind of harassment, then you're condoning this behavior.
And because of this, that player probably won't get his chat bans or whatever, because there are people out there who will just sit there and go "eh, it's not me, no big deal".
Great job guys, you REALLY help this anti-toxicity system work.