Our position in matters like this, here and in the real world, is not to punish (e.g. slander them in the forums), but to report report them to those that first verify the facts and act accordingly (i.e. sts).

If we start calling names here that would be vigilantism.

Civilians are not allowed to call such punitive actions because civilians is the group that also holds the a-holes that need to be subject to such punitive to begin with. Vigilantism could only be called for if the powers that be were unable to or unwilling to take action. That is hardly the case here.