Well, heck, in those first few minutes it’s very clear that all this stuff takes place in an alternate universe, not our world. With that premise I don’t understand what all the fuss is about. IF there were such things as alternate realities, then of course it’s possible that the magesterium represented by whatever semblance of organized religion exists in that universe is corrupt and off-kilter.
The clip looked intriguing - for a fantasy film. It is clearly not intended to reflect reality, so go for the ride and enjoy it on its own merits. Thank goodness it is an alternate universe and that the real magesterium is honorable and true.
Interesting that the producers watered down the story so much. With these books-turned-films remaining true to the story is so important. For fantasy films, even moreso, because the fan base for the novels is the target market for any film attempt. If they had significantly watered down Lord of the Rings or Narnia those films would not have done well. It seems Golden Compass is paying the price for the attempt to reach a broader audience at the expense of insulting the true fanbase. Ratings are not good despite the quality of the film production/cast/cg/costumes, etc.