That isn't enough evidence to determine whether someone is a trash player. I play Yi games where I go 30/0 and I turn around the next game and of 1/6 because I got crapped on by the enemy jungle or the enemy team shut me out or it was just a bad comp... also account for smurfs that rip people to shreds in a game. I assure you if they belong in bronze they will get there.
Often times we see people come on the boards proclaiming something to be "true" and therefore not offensive. "You're gay" they say. Then they say, without any evidence to the contrary, that it is true.
(being gay is not an insult I associate with, just an example of logical fallacy)
The other mark of a totally radical statement is when someone gets offended the agitator says "Well you're offended so it must be true"
This logic is wrong. There are many women, for instance, that commit suicide because people tell them they are ugly. I'd marry them on the spot if they had a decent personality because I looked at the images of these women expecting something horrific and all I found was an almost supermodel appearance. That touches on my next approach, people tell people things that aren't true to deliberately hurt them. The other girls were jealous of that girl for being so pretty so they told her she was ugly. Same with league. A person sees my score of 17/3 and they are sitting at 0/9 and they proclaim that "this jungler sucks" because they are doing poorly.