Windows Mobile has not had the ability to handle OOXML-based documents until now.
This might make 2 applications which are built from the same codebase and properly support a derivate of OOXML. Both applications come from the same company, to whom OOXML is "a simple matter of (its) commercial interests", according to its own manager.
The use of dark humour there hopefully helps illuminate what a lot of "modern" technology became like and how it interacts with human civilisation (to what ends and whose gain)