While I'm not arguing against your overall point, your example is not a good one. Volley was unnecessary. It only got attention because Google did it but the community was already on top of the issue. From shipping their own, newer Apache Client libs, through koush's ion and picasso, to Square's okhttp, networking on Android is full of good libraries to use. Volley didn't anything dramatic to this and, judging by the amount of attention it has received, it was someone's side project.
I take your point, and that's exactly why I'm not using it in production, but it doesn't seem like Google should have drawn as much attention as they did to it, running a session on it within Google I/O, if it was just intended to be a side-project and not for widespread consumption.
I guess I'm just coming at this with a WWDC mentality, where a presentation would be run only on a completely production-ready and documented framework, and perhaps I/O does things differently.
