I hate to feed the trolls, but I'd have to say that I'm frustrated that the Red Hat/Fedora FUD has switched from "Canonical doesn't contribute" to "Canonical doesn't communicate."
None the less, just for a little factual information: libappindicator is an implementation of the KDE Status Notifier Item specification for GNOME. It has been proposed to FreeDesktop.org. It's implemented as an applet, similar to all the other applets in the system. When it was proposed to GNOME as simply an External Dependency (not even a full project) a bunch of Fedora devs decided it was a good time to bring out the blowtorches and flame away.
Very frustrating experience, and one I'm not too excited to repeat in the future. I probably will because it's the right thing to do, and I'd like to contribute to GNOME in a meaningful way. But the Fedora hate of all things Canonical makes that frustrating and mostly unproductive. I hope that in the future that will change, but it sadly seems to be heading more for entrenchment rather than cooperation.