It sucks that this was the outcome as it's going to require a ton of work from the modders, but to expect that a major publisher would involve the unofficial modding community in the release of official patches feels insane, even if they do have a sizable following.
In fact, I prefer it this way. I want the publisher to keep their fingers out of what the modders do as much as possible. Things are their best when the publisher is ignorant of their work. Less chance that the Eye of Sauron that is their legal department starts checking over mods for potential copyright lawsuits