Never seen any more fleshed-out explanation of the rename. The linked post pretty much repeats the final phrase:
> At first, the project name has been changed. “Emmet” is gonna be brand name for new tools and not all of them will be related to “coding”.
I've quoted the only "explanations" I know of, as I wrote I don't know of any other. If you want more info, but the developer.
> The plugins for these editors are developed by third-party developers. May not support all Emmet features and actions.
Yeah, I'll pass.
Emmet sounds like something I don't care about.
zencoding-vim is vim script support for expanding abbreviation like zen-coding(emmet).