Amazon is evil, ha? For what? For acting in a way that is legitimate according to applicable law? You don't wanna work for 'em? Then don't! And read the damn contract before you sign it (and if the contract is in German and you can't speak German, again, don't sign it, period). Why don't you super investigative journalists take a closer look at other global players?
What's the surprise here???
Rather than accusing the beneficiary, you may want to take a closer look instead at the system that allows for these things to happen.