Loss posts started as a counterweight to gain-porn and do something useful: they make variance visible and break the illusion that everyone else is winning.
They also normalise the behaviour that produced them. A community that applauds a sixty thousand dollar loss as content is rewarding the position sizing, not just the honesty, and the laughter can make a serious problem easier to keep making.
Read them for the process rather than the number. The instructive part is the sizing decision and the state the trader was in, which is usually visible in the comments and almost never in the screenshot.
Related: gain-porn, yolo, full-port, gambling-disorder-signs