WTF stop saying EZ

So earlier today I hopped into a game where the enemy blitz did not show up for majority of the game. Our bot lane ended up feeding an mf solo bot lane and they ended up winning the game. This blitz just had to be so hotheaded and said, "EZ". He repeated these two letters "EZ" about like seven more times. Come on man... People should honestly be humble about a win, it's just very unsportsmanlike to just brag about a win that you barely contributed to... Sorry for ranting, I just wanted to see what other people thought about this issue.