Leaverbuster is bollocks.
It doesn't even check to see if your teammates/the enemy reported you. It's automatic. God forbid my uncle has a heart attack and I have to afk for 12 minutes and the game automatically disconnects you after like 2 because that's good design and then I come back and we play the rest of the game out without surrendering and actually have a few really good fights and almost make a comeback. Yeah we still lost but I got 3 'Kept their cool' honors that game and our Fiora even said 'If you hadn't left this would have been a guaranteed win. You're good but you're just not tanky because you're behind'. (I was Galio jungle)
The automatic system needs to NOT be a thing for leaverbuster because sometimes people have legitimate reasons for leaving. I TOLD my team before I left "Family emergency be back asap". They were cool with it. I didn't get any hate or flame. But I'm punished with 5 20 minute queue buffers because rito likes their fancy spaghetti code programs.