Whenever anyone asks for evidence I start to wonder why they need the proof. Why did you need this link? Do you have a business relationship with Amazon?
The customer data on Amazon Retail is Amazon's, not the seller's , just like the customer data when you buy shampoo from Walmart is Walmart's, not Procter&Gamble's
I'd like to ask for evidence for statement 2. This sounds more like your opinion than a substantiated claim.
1. Someone needs to pay the people who write stories. If proof is important you should not object to contributing to the people who work on your behalf.
https://www.google.com/amp/s/www.wsj.com/amp/articles/amazon...