Pretending to have committed a crime is a crime itself

Gotta listen to some Götz Widmann haha.

You are only truly anonymous if you always use a VPN or Tor. If not, Reddit has your IP and the ISP knows who is behind the IP. If LE knocks at Reddit’s door with a warrant, they will give them your IP, with which they go to the ISP to get your name.

they’re an underwater welder from a specific small town and they have three sons

You would be suprised of how much less info than that is needed to ID a person. There are studies about ID’ing people via their favorites and last-watched lists on netflix.