Those people are total toxic in my opinion. If you dont know what im talking about, just like 10 mins ago in my previous game, the game was lost only due to our adc wanting to play while wearing fucking mittens. And in the pick he didn't even mention it once, just when he was feeding 4/11 he then said "Oh i can't be blamed, im wearing mittens!". Then when I just normally asked him to take the mittens off, he was just like "No, it's a challenge!".
Like honestly, WTF. People who do that without full premade or without their teams approval are the most toxic people in league and should be banned.