"Demoralising the enemy team"
So is it me or is this a rather pathetic excuse to be toxic and degrading? God help you if a game isn't easy with a 20+ kill lead. God help you if a game isn't easy with every lane and jungler snowballing like nuts.
Honestly this feels more like an ethical discussion, at which point I'd like to say to those who think it is fine and acceptable to degrade and belittle people to make a win easier to get. What sad tragic thing happened in your lives to make you such a pathetic broken person?