Grain of salt the supposed source is even reliable anyway. Seems way out there that there's outright regret over publishing an elseworlds book in a line that was specifically designed for such a thing. This is absolutely nothing like the last problem ( which frankly what I feel was self-inflicted because they themselves made way bigger a deal of it than anyone else cared initially) with that Batman book and the "nudity". And the supposed backlash I find to be heavily exaggerated at best. I've seen some complaints but just as many who don't think its that big a deal. And I'm far from a "Miller apologist". I barely care about most of his works.
Not to say I believe its going to become official, which leads to:
Actually to be honest when I wrote that I was just more meaning the chance of a new origin being written independent of this story. I still think personally this will stay the DKverse origin. And even that in my own head canon its completely independent of event that, as I'm not much a fan of that verse's Superman outside of DKIII. That said your examples have shown that they can take elements of something outside canon that's successful and implement it. I was half surprised they didn't try it with American Alien.