By saying kys you are telling somebody to kill them selves and take their own life, sometimes its hard to tell whats a joke on the internet. It would normally result in a permanent ban but Tyler's email is down therefore the player can not appeal.
He only said this because he was banned for a"KYS" threat. It is a serious topic and most people cannot touch on it because they or someone they know are going through it, including me. Just stop saying it and perhaps it will die down.