"tough love" is one thing, just being unkind is another. Everyone's path is different and even if someone is not 100% serious about getting sober, they are still here posting on SR for a reason. If someone is truly obnoxious the mods take care of things by way of banning them. Otherwise if they are simply floundering they are generally welcome to stay. If someone is really getting on your nerves because they just don't get it, why not use the ignore button instead of commenting something that is not only not helpful, but could potentially be harmful to their efforts at recovery?