the meddling that probably messed the film's delivery most was that of post-production changes the screenplay, including rearranging bolvangar and cutting out the last three chapters.
I was referring to meddling that made TGC more commercial-friendly, whether on the religion question or that of the story's harsher moments. The ending was cut for the same reason the Church stuff was (sort of) obscured - profitability, and they were honest about that. Keeping the ending in might have resulted in better reviews and fan word of mouth, but I'm not at all sure that it made a significant dent in US receipts. Heck, it might well have made money. We'll never know for sure.
The Svalbard/Bolvangar switch was, I think, necessitated by cutting the ending. It just wouldn't have worked for those unfamiliar with the books to end the story with a bear fight that the heroine watches from the sidelines, with neither Craig nor Kidman around. I think that the reviews would have been even worse, and the box office also, had they
not switched this.
But the cuts they made to the film don't work: Golden Compass is only half a film! And happy Hollywood endings have no place in His Dark Materials.
As producer, Forte's job was to make money. The artistic stuff was Weitz' domain. We can't know if the cuts "worked" in the producing sense, until we cut a window into a world in which an uncorrupted TGC was released.
Again, TGC's goal was to make enough dough to finance the sequels. If you want to argue that they should have ignored financial prospects, made the best movie they could and let the chips fall where they may, that's a perfectly defensible position. But the producers took a different track, and theirs was defensible also. As Orwell wrote:
"Libel accomplishes nothing."