What if you go to a bootcamp, get saddled with an ISA and then work at mcdonalds and somehow get a better job that has nothing to do with the bootcamp? The bootcamp gets your money. Quantity over quality.
Debt does generally have an expiration and is discardable in bankruptcy... unless you live in America. ISAs might be an attractive alternative to how terrible American laws about student debt are, but the real solution is to fix the awful laws.
A better alternative that you can pursue today is just to seek education abroad, Canadian universities are a fraction of the cost for an equivalent service - or be careful about the education you choose, most state colleges are very reasonable for in-state tuition and you can potentially save on room and board.
Ivy-league schools are overpriced and a waste of money.