Accordingly to Douglas Purdy's post: From “Oslo” to SQL Server Modeling: OSLO will change as a chamaleon to be a different thing as originally promised.
I think there's a perception in the 'agile community' that MDD is big design up-front or otherwise non-agile. People like you and I know that is not the case.
Then, it is just a question of marketing. We should try to change! }:)
Glad to see that Andrew will address this specifically in CG-MMX.
On the other hand, I think the abuse of words like "agile" ends with countermeasures like the SEMAT innitative to try to put some order in the Software Engineering field.