Again... This is a argument that will not find a acceptable solution as time is always going to be a factor. A ruling is considered "Official" once it has reached it's last point of being overturned or changed. But, this debate is not about what can be changed, it's about what "official" actually means.
If a Floor Judge states that Jinzo is a Trigger Effect, and that you can chain Divine Wrath to destroy it, and the affected player asks for a Head Judge Ruling, and the Head Judge incorrectly rules that is indeed a Triggered Effect (aside from the fact he should be shot), it is an "Official Ruling", as it can no longer be overturned and must be accepted. This poorly given ruling will more than likely never go any further than the Event it was given in, but the final outcome will not change the Match results once the error has been found.
The fact that a Official Ruling can be incorrect does not mean that it is any less official. It just means that, a) No one has caught the error, b) The error cannot be verified as fully incorrect, or, c) The error has been verified, but not updated.
From the beginning, I have stated that in the absence of an official ruling by Konami on a given card effect, as Judges, we are tasked to use judgment in creating a Ruling from similar situations. In the event there is nothing comparable, we must use the best common sense Ruling we can surmise. While it may not be fully acceptable at the time by the players involved, it is the only action that we can take in a "real-time" environment. So, we can keep saying that the Judge List is not Official, and that we are only making things up as we go along, until Konami decides to toss us a bone, but the fact remains that a call needs to be made in a Tournament Atmosphere, and Konami isnt there to do it...