I'm not defending Amazon but what did they do that was evil? From what I read in the article, they were doing things a normal add-on developer isn't allowed to do, but that isn't inherently evil.
In a similar vein, your reasoning would conclude that white hat hackers are evil as well.
Having the power to do something bad, and doing something bad with that power are not equivalents.
Is it unfair that they received that power? Yes. Does that make it evil? No. Do I trust them? No.
I'm not defending Amazon, I'm questioning your reasoning because I don't arrive at the same conclusion.