Quite frankly that organization does not seem to be something I'd be proud to be part of in its current state.
First it means to be recognized as just as serious as these guys:
http://womau.org/xe/netherlands
Good news indeed
There are a bunch of martial arts missing right now, far more serious and culturally significant.
Second it seems to be organized by country. Which country does the ARMA represent? Poland, it seems... I can't even begin to understand how this is possible or representative of the tradition. If I were polish I'd sure be upset too, and I don't think ARMA even enjoys an especially dominant position in Poland either (especially seeing
this).
In the status of the organization you can find this:
In case where there are more than one national organization in a country each representing the unique tradition of martial arts distinct from the other's, such organizations may become member independently. The additional membership application under this sub-paragraph from a country which already has one member or more shall be accompanied by the written consent of the member(s) from that country. When there is no member from a country yet and more than one such organization file applications simultaneously, a mutual consent in writing shall be presented along with their applications.
So what this nomination does is appoint the ARMA and its American director as the representative of Polish martial arts, with the full power to prevent any other Polish organization from joining. On par with a bunch of modern constructions and a good measure of modern sports meaninglessly sorted by countries. Unless the organization is totally revamped this does not add any legitimacy to what the craft already had, and will only feed the criticism from other groups.
Regards,