And yet many people still believe 2010 is official, when it isn't.
Plus, I think part of Lotus's point was that putting a year without qualifier makes it seem like it is generally accepted, aside from whether it is official or not. MMS and 2 hit escorts may be widely used, but I wouldn't be brave enough to say they are generally accepted (for instance, I don't accept either).
Since Xca|iber's project is based on BFG:R, which I think can be safely described as a minority adopted rules set, I don't think Lotus is entirely off the mark. But, as I indicated, I'm not sure how many other ways the file can be named.