Orci responded to other posts under the article, and, if you didn't notice, he was asked there about the Blu-ray issue. He could have replied, "I only wrote the movie. I have nothing whatsoever to do with its home video release, or any of the marketing decisions that went into it, nor am I an executive at Paramount Home Video" but he didn't do even that. He didn't touch it. He could also have mixed sympathy with insult to say, "I feel for you as a fan myself, but I didn't even know about it. You poor fucks were screwed. I'm just sorry I didn't get a piece of it in my contract."
Maybe he didn't notice it? Or one of a hundred other reasons aside from the one you seem so intent upon ascribing to him without any real actual evidence -- the bottom line is, we simply
don't know why he hasn't responded to this question, and to insist upon other motivations without proof goes beyond the bounds of reasonable, civilized discourse.
Orci has about as much ethical accountability on this issue as you would if someone
demanded that
you, for example, condemn the Assad regime's use of chemical weapons on civilians in Syria. As in, none whatsoever. It's not his problem. If he wants to comment on it, fine; if not, that's his own private affair.
Perhaps he
is ducking the question, but even if he is, again, he is under absolutely zero moral obligation to supply a response -- he had nothing to do with the authoring of the Blu-Ray, and bears no responsibility for those decisions, which were made by the studio above his head. Period.