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.
Time will tell is there are investigative journalists out there who will quit parroting Microsoft (e.g. false layoff figures) and relying on LLMs controlled by Microsoft to spew out false "facts" for them
If Microsoft admits that slop is too expensive and is for "entertainment purposes" because it cannot be relied upon, why would anyone other than the pushers and profiteers still insist that slop bears potential?
There have been more efforts than we can to count or can enumerate (probably over 100 such efforts) to gag us and to prevent us writing about what has happened