Historically, I think Wonder Woman got "updated" in the same way that Batman got "updated" by Dark Knight Returns. That was supposed to be an Elseworld, or at least out of continuity. Wonder Woman's character and motivation seem to have been changed by Kingdom Come, in that later writers, noticeably especially with Rucka, seemed to find that version more compelling than the one previously appearing.
As a revision to her background and character being done contemporary to a DCU-wide reboot, it is simply an outrage. It destroys all that was original and picturesque in Wonder Woman without replacing it with anything even equally appealing. While I don't want to politicize this myself, I don't think anyone seriously disputes that part of the concept was to give girls an inspiring heroine similar to the ones boys always had; this version is incapable of serving in this capacity, as is any future version based on this one's backstory.
And again, it comes down to a question of competence. You might say that Azzarello plans to restore the Amazons and their culture at some point, that the whole thing might be divine disinformation, that none of the gods or other narrators of the book can be trusted, wait to see how it all ends. But again, Azzarello was given the job of establishing Diana for the nu52 universe. They're getting it done with Superman. They're getting it done with Batman. They've even done a brilliant job getting it done on Aquaman. We're left with overanalyzing crumbs from Justice League while wondering what the characters might be saying off panel. Again, pretentious Vertigo styles simply fail to do the job.