Second to that and in response to Kimera, finding out who somebody is in real life needn't be nefarious even if it does feel like a violation. Sometimes it's done out of curiosity. Following the crumbs, putting together the pieces, and getting to know that person further than you could through what they choose to show here can be satisfying.
It's the threat of 'exposing' them unfairly so to sabotage them either online or in their lives that can be a little worrying, especially with real-life ramifications. I don't agree that the act of following and getting to know is necessarily bad though. I've found a few people and never exposed. Just curious about what matches against what is written and projected on this board and what that means for their psychology when paired against what we see elsewhere.
Probably that reasoning is irrelevant when assessing whether you would like to volunteer information to allow someone to do so. The idea was about intention though and so I offer that as a counter to the idea that he was necessarily trying to do something bad with whatever he discovered. Of course, you're using 'dox' to mean expose publicly we've used it more loosely to mean 'find' on the forum