The author wisely talks about safety considerations, but there's an it's-expensive-to-be-poor risk I'd like to emphasize:
One injury or illness caused by the frugality could wipe out that $2K savings, many times over, in immediate costs, and might never fully heal.
I think back to all the penny-pinching I did (less impressive than the author's), and much of it was necessary under the circumstances, but a very poor value tradeoff otherwise.