1v9 Mentality: Muting everyone and everything is one of the dumbest ideas I've ever heard
This is supposed to be a team game, where you work with your team to beat the enemy. Even the slightest amount of strategy works wonders in this game. However, with the direction that the League community in general has gone, less and less people even want to register that the rest of their team exists, and all it takes is so much as a single missed minion to start a titanic flamewar in the chat and make people either leave or try to force a surrender or defeat.
However, this mentality that has been exploding in popularity, just turning off all communication and ignoring absolutely everyone and everything, is one of the things that is destroying the game. It allows even a half-assedly coordinated team to run roughshod over you all day.
Almost every other game at this point has not just one person, but several people who will absolutely refuse to even be in the same quadrant of the Rift with another player, let alone talk to them or communicate in any way. This came to its logical conclusion earlier today when the jungler - as they usually are, and they're almost always Udyrs, too - flashed over the wall multiple times to prevent me from healing them when they DESPERATELY needed it.
This sort of mentality ruins games, and we need to stop it. If you have to deafen yourself and put on heavy blinders to even begin to hope to maybe have a chance at not autotilting yourself into permaban status in a game about dealing with other people, then there is something gravely wrong with you, and you need to fix that issue or just not play at all.