1. Miles aren't allowed for sale on that forum as airlines enforce that the sale of miles strongly and members wound up losing miles. That hasn't happened with nights over the past 8 years of DDF, so I ask, what exactly has been devalued or changed due to their sale there?
2. Programs disallow bartering exactly as they disallow sale, so again, I ask what's the difference and why don't you complain about what goes on in CC or blame that for alleged lesser benefits that you haven't yet specified?