I've been working on this report with Graham Binns for a good portion of this release cycle and it has always been made available at the same public URL. I purposely didn't advertise it much because until recently it wasn't very useful - it is now to a point where it can be useful which is why I blogged about it.
I don't understand where you get the idea that this puts ubuntu users "against" upstream developers, the point of the report is to point out which bug reports are in an upstreamable state so that we can push those to upstream bugtrackers.