My favorite example of this was I was browsing the "top 50" computer science books on Amazon. This was about 10 years ago. In the top 50, they had basic how to books (like how to use Linux or Excel), books on getting coding jobs, etc. They had almost no actual computer science books and yet, the top 50 list software almost certainly created by people with a computer science degrees!! The list even listed the same title more than once in a few cases. It was obvious that the software which built the list was broken and either had not been tested or was deployed in a known broken state. Customer obsession does not mean shipping obviously broken software which does not help the customer.

As for trust, when I canceled Prime, Amazon used dark patterns to make the process as painful as possible. Not much to say other than I do not trust companies which try to trick me into not canceling a subscription I do not want.