People who think it is "just a game"

Dear people of League of Legends who use "it is just a game" to cover up for their mistakes, when they were not even attacked. I asked one of my teammates a question on why they went in, and he responded "it is just a game". Someone needs to tell these people that they
should themselves out of here. There needs to be a report button for those people or if not, can someone tell me what to report them under. League is not just a game, it is also a community filled with all kinds of people. It is also a competitve scene, and a place for people to strive to be the best, if you are one of those people, do not play League of Legends, or any online multiplayer game.