Some people complain that racers don't come here. People who know racers say it's because racers don't feel respected here because people put their knowledge/ability in doubt. Yet, racers come here to unload their used stuff. When they do, they have little posts, so people don't know if the seller is reliable. The someone who knows the racer says: "He's racer, I know him, he's reliable". Sometimes it works out, sometimes it doesn't. In this case, racer was rude, so people are less likely to respect him or find him reliable to get his stuff. Racer never comes back because he feels he is not respected.
Wheel goes round.
Who's fault is it? Nobody, it's the internet, that how it is.