The converse is also true. If not Carr, why not say no? If Moore is sold on Haener or Rattler, or is 50/50 as you say, why wouldn't he say that they are going with Haener or Rattler?
What I'd really like to know is why didn't anyone follow up by asking Moore if he decided on Haener or Rattler as his starter? That's the logical follow up if your goal is to try to find out who the starter is.
Moore was already asked and answered a question about whether he saw Carr as the starter. Trip asked the same question again and he didn't follow up by asking about Haener or Rattler. Neither did anyone else. That's shoddy journalism which is more evidence these guys aren't good at actual journalism.
I think that the reporters knew that Moore was not going to say if he's decided on a starter, so they only asked about Carr, because they know they can get a lot more clicks with Moore not saying yes or no to Carr, than they could from Moore not saying yes or no to Haener or Rattler. They can get more clicks with the story "Moore non-committal on Carr" than they can the story "Moore non-committal on any starting QB."
Mo' clicks, mo' money.