You are wrong about GNOME. GNOME developers never have claimed that the fallback mode is anything other than a temporary thing. You are confusing random posters with GNOME developers. This is misleading.
blog entry on journal by the primary author of rsyslog
Posted Dec 1, 2011 8:43 UTC (Thu) by ovitters (subscriber, #27950)
[Link]
It was given the name fallback to make clear it is not the standard mode. Intention from the start was to keep it for the entire GNOME 3.x. However, amount of maintenance it needs was severely underestimated. This coupled with low usage (though impossible to measure) is the reason the maintenance might be given up earlier. Still not decided though.