After more than 3 years, the review request for package rubygem-passenger can finally move forward.
A bundling exception was finally granted, because someone is putting in the work to make the bundled, forked and patched version of Boost ultimately dissappear - by bringing the required changes upstream.
While I proposed doing so early on in the saga, though I could not do it myself and would have needed to find someone else to do so, that wasn't acceptable - as is tradition in the Fedora Project by now, the "discussion" on my plan of attack went absolutely nowhere, with people arguing in circles, simply for the sake of arguing, and without ever having been, being or feeling endangered of being involved in any way, shape or form.
Patience is golden, the cost of running Passenger in my own build systems can now be avoided. Time for 3.0.12 to be packaged for Rawhide, built against Ruby 1.9, and the review to move along!