Knowing the outcome, and only going by my hospital experiences, the hospital is "drawing the line." Meaning there is no hope that the baby will be able to come off life support.
Not only that, but the way I read the description of the condition, even standard life support will eventually fail.
When my husband was an intern, there was a case where an elderly man was on a ventilator. He had no brain activity, and the hospital wanted to take him off life support (and we're not talking food and water here - we're talking ventilator). The poor old man was so far gone that parts of his body were actually starting to, er, um, return to the elements, not to get too graphic. Still, his family wanted to keep him on life support. I don't recall what the outcome was, but I think that eventually the hospital was able to persuade the family that their loved one wasn't coming back, and that keeping him on a ventilator wasn't in his best interest.