The lesson of the story: don't say anything publicly to anyone ever, because everyone around has a camera in their pocket and is way too hungry for internet points.
Further isolating ourselves would hurt in other areas. As someone else said, we need a cultural change, one where we need not to have to constantly distrust other people because they respect boundaries. One of the best ways to do this would be to reduce the amount of value stupid internet popularity points seem to matter and push dopamine buttons.