Why are you guys posting the old names of people who clearly needed their names changed for privacy reasons? Obviously any data posted online is going to be quickly archived somewhere, but that doesn't mean that your highlighting/reposting of it has no effect. In some cases you may literally be putting lives in danger. If you were investigating a scam or something, that'd be different, but you seem to just be indiscriminately & recklessly dredging up data that would best be forgotten.
This is precisely what happens when you allow users to what amounts to spy on forum members. There is a job posting on Facebook (working for the company) for someone whose job it is to detect and stop scraping. I have been told this person would be on a fairly large team/group of people who have similar responsibilities. Other social media platforms have similar roles and all have policies prohibiting scraping (often being defined as non-human, or inauthentic or similar).
There should be a balance between allowing everyone to do whatever they want and having minor regulations, while empathizing the need for regulations to be minimally burdensome/costly, while providing a real benefit to the community as a whole that it cannot otherwise realize.
Who knows how much additional data certain people has on forum users, probably a decent amount, and probably enough to make a lot of people uncomfortable if they knew exactly what was being collected on them by third parties, even if the information is public.