The fact that Asmodee owns BGA does not mean they pour endless money and manpower on it. The way I understand it is that BGA is more or less an independent entity under the wings of Asmodee (which helps immensely with rights for games to be published on BGA).
Furthermore the App developers are individuals from the community (I might be wrong on an occasional Dev, but I think the majority of them are) and do this in their free time.
And as was said, web/app development in a community environment happens organically and peopke translate games because they want to play them in their own language. Looks to me like M44 was developed originally in French with an added English translation. If you want to improve it, lend a hand. Or wait.