Whether you believe code schools are good or bad (I lean somewhat towards good), I wonder if we have not fully learned the lesson from the rash several years ago of fly-by-night for-profit colleges preying on vets and providing substandard education and inflated job promises, all on the GI Bill's dime. I worry that if the GI Bill was extended to code schools, we'd see the exact same thing happen again.
I think established and accredited universities should set up two year coding programs that can teach the trade as opposed to pop up overpriced bootcamps that usually operate without much accountability. Then the GI Bill can pick up the tab for such programs.
Plus, established universities don't teach the trade, they teach you how to think about learning the trade. You actually learn the trade in co-ops and internships and by doing it.