I suggest we not allow it, and I think the proposed Rule 5 covers that case. Seeking vigilante justice on the internet is a dangerous game. It is much too easy to misidentify someone, or to act on inaccurate information. There are plenty of documented cases out there of innocent people coming to harm. Two high-profile examples come to mind:

A university professor wrongly identified as a participant at a white supremacist rally (the article includes other examples, too): https://www.bbc.com/news/world-us-canada-40935419

The Boston Marathon bombing in 2013, where a bunch of innocent people were wrongly accused and faced harassment: https://www.scu.edu/ethics/focus-areas/internet-ethics/resources/social-media-and-the-boston-marathon-bombing/