I find it hilarious that you still lose LP for this shit.
Guy instalocks Karthus with teleport. Lanes normally til level six and enemy jinx gets low, I type
"Karth ult"
And it turns out her heal just came back up, back luck and she survives.
"Fk u I'm feeding now."
That's it. Apparently that's what it takes in silver. He intentionally fed jinx 10 kills in a row using teleport to get back to lane, just sits around waiting except to try and steal kills with his ult, and the enemy team refuses to report him because he handed them the win.
So now the other four members of his team lose LP, he gets exactly what he wants and he gets a little giggle because he's so funny, and he gets to go and do that as much as he likes. And because he remembered to hit R every couple minutes, no automated system is gonna detect him because he ended up with a couple kills and assists.
I've played from bronze to gold and the amount of trolls never changes because they get exactly what they want: the satisfaction that their actions have caused everyone else to lose LP, lose their promos, and lose at least an hour of their time having to grind back up. If someone dies more than 15 times in one game, for whatever reason, that loss is their own damn fault and their team should not be punished the same amount as them.