the VAC Discussion Forum exists to provide a place for people to go with questions about vac, or for help with fixing a vac error that is keeping people from playing the game. People see the VAC part of a message and their brain shuts down in panic and they fail to understand the rest of the message.

As for the story in your link, it is still just a story. A good scammer will use a story that is believable enough to get what they want. This is why there is no way to directly talk to anyone that has access to the banning system. It help to keep sob stories from being effective at getting bans removed, thus rendering the ban system useless.