I really hope defending yourself/others from flame isn't harshly punishable.
Just had a game where I was helping a new friend get into League. We had a rough early game, and immediately our mid starts screaming about how we're feeding and trolling. I don't want my friend to be deterred from the game, so I speak up for her.
"We're trying new things in blinds. Stop being a %%%%."
Yeah, maybe I shouldn't have said %%%%, but immediately following that - and for the rest of the game - my midlaner starts screaming in all-chat to report us. Talking about how we're griefing, threatening her(?), etc. and eventually our top laner joins in on it for some reason? So it nets three extra reports from the enemy team. My friend and I walked away with, allegedly, five reports for verbal abuse, negative attitude, and intentionally feeding, because of this.
In a game where I was just trying to make sure my friend wasn't deterred from future games - not to mention I was the only decent performer on my team to begin with - I've been reported out the ass.
I've never been a victim of the punishment system before, but I've also never been spam reported like this. I don't personally mind too much, but my friend may not even want to come back to the game as a result of that level of toxicity.