Minecraft. It used to have a toxic fanbase, and it is probably still toxic today. It is an inescapable pandemic transmitted by delusional kids who have no respect for opinions they disagree with and will readily bash and even send death threats to anyone who even hints at disliking the game. While there are a lot of mature players, probably more than toxic players, the game's popularity means that you will likely have to put up with at least one Minecraft devotee in your life.