The author calls it a 'joke' that Heroes are just unpaid Amazon employees, but reality doesn't become a joke just because it's funny. The asymmetry here is staggering. I find myself holding back private research because I don't want to provide free R&D for a value-extraction machine that is already efficient enough. The author was at least dependency-driven in their contribution, but outside that kind of dependency,…
It's perfectly legal to say: "except for Amazon [and whoever], anyone can use this for any purpose, provided..."
Amazon won't intentionally use that software. It's not worth the potential legal liability.
That doesn't mean Amazon won't write their own version though if they think they need to at some point.