WHY ARE PEOPLE STILL KILL FLAUNTING?!

"Hur hur, I'm 3/6, you're 1/2, stfu, lern 2 play!"

Like... really? You've fed the enemy team 6 kills in 15 minutes and you think you're doing better than anyone? How does this mentality still exist? This game is over 6 years old and people still don't understand basic concepts about the game...