A difference between Wordpress and Organic Maps, though, is that Wordpress is a framework whereas Organic Maps is an application. Switching to a fork of Wordpress means a different extension marketplace, various config files that may need to be changed, etc. Switching to a fork of Organic Maps is just downloading a different app that does the same thing.

Completely irrespective of the governance structure of Organic Maps, by its nature it is much more easily forkable than something like Wordpress.