300,000 players online x 0.5 reports/hour = 2500 reports per minute.
300,000 players online x 1% searching the same game mode / 10 players per match = matchmaking to within 0.7%
To avoid LPQ:
1) Don't draw attention to yourself. Don't use voice or chat except for 'ss'. Mute all at lvl 1.
2) Only play in parties.
3) Get alternate accounts.
4) Limit your usage to one or two games per day per account.
But if I ever see the screen cap again I'd be sure to save it.
He can't report you for being a bad player or for dying a lot, but if your deaths look like intentional, if you "gave up" the game, or if you text abused back, you gave him a reason to report you.