Sorry, I just think some info got mixed up somewhere...whoever did the reporting. I've never heard of a g-tube burning out the inside of anyone's stomach. I know kids who've had tubes for years...their whole lives. If the stomach gets irritated, you can change the type of tube, try a j-tube, insert an NG or NJ tube. Use the PICC for nutrition. Chemo patients often get PICC lines.
Kids like my daughter have tubes their whole lives. Sometimes they have to be fed by TPN eventually, but that's almost always because of gut shut-down, not because their tube "burned up their stomach". They keep their tubes for meds and stuff. It makes no sense that a child couldn't be fed short-term through a tube.
It's possible the misinformation came from the docs. The docs figured the boy would die anyway and didn't want to bother trying a different tube or whatever. In which case I give props to the dad for going all out to save his kid's life. But the story still doesn't add up.