Thank you, Juan, for your reply.
I totally understand that maintaining documents is a time-consuming task and needs a lot of efforts and time that is preferred to be spent on the actual development.
I have a little concern and really appreciate if you or anyone from the core team can elaborate a bit more. The Custom Mobile app creation service that Moodle HQ offers is surely a valuable service but is it going to threaten the availability of the Moodle App source code to the public in any way in future?
You are right about the existence of developers with significant achievements with Moodle Mobile App. However, there are many other developers on the other hand, that need a little help to start so that they can contribute to the development of the app and maybe in near future you would have enough contributions from the wider community to give you enough time to take care of maintaining docs. I believe this is happening for the Moodle code itself and there are many non-HQ contributors that raise bugs, provide patches to fix bugs, propose new features and sometimes provide patches to implement their proposal. I don't see this happening for the mobile app though.
Obviously, I don't have enough information about what's going on as you have and I might be 100 percent wrong. But I think that Moodle is depriving itself of potential contributions by not maintaining the development documents. It is worth to consider that many people that are involved in Moodle development in any way do not have Cordova development background. Many of them are experienced PHP developers, but they need some help to start riding a new horse.