Yesterday while browsing the front page of that other site I came across a video of a TikTok user who finds people based on short videos.
Their TikTok page can be viewed here: https://proxitok.privacy.com.de/@the_josemonkey
(and they also have a webpage https://josemonkey.wordpress.com/)
I find it amazing, geeky, fascinating, and creepy that a single person with a computer — not a government organisation — is able to do this.
It all reminds me of that Wired article from 2009 about the man who tried to go off grid and was eventually found by internet sleuths.
TL;DR doxxing has never been easier, don't say or share anything on the web that you wouldn't want printed on the front page of a newspaper.
A twitch streamer I follow once showed a bit of his room. Someone from the community was able to identify his window frames, because they were rare, and traced them back to his location.
So yeah... it's hard to imagine what special knowledge people out there have, that you can't even comprehend when you share something seemingly uncritical.