With the development of the REST API, and its incorporation within the core of WordPress, it is pretty obvious that an end result like the said plugin requires a lot of work and effort, with somebody being responsible for it.
Ryan McCue, the person behind the WordPress core, started contributing to the community more than five years ago, and he is now the person responsible for creating the JSON REST API, which is a platform that is very easy to work with and that can easily interact with any programming language and thus benefit any program with an API access, including support for a native iOS and Android system. Even if the development goes on, improved website experiences are already resulting from this API as it leaves behind several restrictions that current APIs impose. Matt Mullenweg, the main guy behind WordPress, also considers that as WordPress continues to evolve, a bigger focus from the application standpoint will be created once the API is implemented...