Agree. It seems that the parents are under the impression that by keeping the child alive on a ventilator that somehow he is going to be able to be removed and become whole. It is they who need to come to terms with the terrible disease that is taking their son from them and let him rest in peace. 

In my opinion, they are the ones committing  abuse by letting this child exist, but never live. If they truly loved him, they would set him free. What they are doing is selfish and in no way in the best interest of the child. You can also bet that if they had to pay for the care, they would not sell everything they have and then some, to pay to keep him alive. 

Health care, at some point, has to be realistic in that millions of dollars cannot  (and never should have been) spent on anyone who obviously has no chance at functioning, ever, no matter how long they are kept alive by a machine. This isn't playing God, but keeping them on life support  certainly is.