Don't believe them, it takes FAR more time, effort and water (not to mention land) to grow enough to feed yourself and your family than most people realize. Also consider the fertility and topography of your property (is it even close to level? how are you going to cultivate your crop(s)? Spading fork and shovel? Rototiller? Plow? Who's going to pull it?
Also, why hasn't the site been updated in more than a year?