If I had a dollar for every time someone thought I was boosted...
I'd have enough money to get someone to boost my account.
Seriously though guys, it's probably none of you here, but it's so annoying hearing this insult being flung around. Out of the millions of people who play this game, you'd think an overwhelming majority of people just play the game like normal human beings. And yet I hear "you were boosted" thrown around game after game (not at me specifically, just as a generic insult).
There are way too many factors. Sometimes people are having a bad game. Sometimes they're queueing with friends and the match is super unbalanced. Sometimes people might totally be wasted trying to play
jungle seriously. Getting outplayed by one person doesn't mean you don't belong in your elo.