DM and VC were both used before Dire Maul’s release, including closed beta, and after Dire Maul’s release. I get annoyed when people act like only one acronym was used. Each server was different. Even different players had different meanings for the acronyms. I remember some players specifically listing DM instead of VC due to the level difference and not wanting to slog it all the way to the VanCleef.
I don’t know why people continually post this same topic as if they have some amazing new insight.