Personal details lead to personal relationships, which then can lead to innocents being hurt. Not cool.
Oh, well, if we won't be hurting them forever, that's fine then.
When we're talking about independent outlaw actors, as opposed to the law and justice that you invoke in your response, then no, I don't think it's too high a standard.
Mostly, but not absolutely. Unnecessarily exposing the existence and whereabouts of someone's kids for what amounts to little more than vandalism and tagging, yes.