That is true, but what is the command line tooling like for java? I build java all day inside god-awful IDEs. The last time I tried compiling Java on the command line it was really a lot of work.
I suppose there is some maven support for building Android. An even better reason to hope for the best for FFOS.
Android also has decent command line tool support and a build system based on Ant. I'm not a huge fan of ant, but the default setup works all right and is extensible. I've mostly managed to stay inside Emacs for Android development.
Well you don't need eclipse to write for Android