Can We End Post-Game Lobby Flaming?

I was recently reported by an enemy team and two people on my team even though I was only slightly sarcastic and annoyed in chat. I had a guy who went Tryndamere mid, did well, and flamed everyone the whole time. Then in the post-game lobby, he convinced every to report me even though he flamed, and got our toplaner to back him up.

Honestly, muting doesn't solve this and it's just a thing people should stop doing. Unless I see someone flaming, I've stopped reporting enemy team members just so I don't send in false reports.