Amazon likely has all that red tape to coerce complainants to register. They will have a higher chance to continue selling the product and won't have to refund the buyers and lose the cut they already earned.
In a way, that's like the us govt in your story with Damon's gold.
Yeah, that's what I figure. They are or have made a lot off of it. The problem is, I can't sell the edited version, because then they can make a claim against me, too. They sold it first, you see. Also, people that read it will think that I'm the one that stole it. (sigh)
He didn't just steal my work, he stole my reputation, too.
My opinion is to not worry about Amazon selling your information. 1) They probably need to include a clause like that so they can use your information in any legal situations that may pop up, and 2) because amazon and your internet provider and other sites probably already have and sell your data anyways, so you're not giving them info they don't already have for those purposes. I'm not a lawyer and I'm not YOUR lawyer, so pinch of salt and all that.
Sorry you are having a rough time with plagiarists. And the red tape and bureaucracy Amazon is having you jump through. I can understand some of the red tape, they need to use it to filter out the scammers from the genuine article's.
Just take the time you need to sort things out. All of us will be here waiting with happy faces for your next chapters. We're not going anywhere.