Maybe their customer obsession culture did not extend to their AWS department?

AWS services names are notoriously bad at communicating what they actually do: https://expeditedsecurity.com/aws-in-plain-english/

Everywhere on Amazon.com has bad UI/UX. For one example, the flow on checking out as a non-Prime member (not sure about Prime members) is janky and feels straight out of 2005. Like it reloads the page, taking ten+ seconds, every time you enter new data (address, credit card, personal info, etc.). I would be laughed out of the room if I tried to deliver this at work, but Amazon delivers it for millions of people.

So no, they care zero about their customers, except maybe for getting as much money as possible out of it.

Just saying, you can be customer obsessed and still not have a good feel for UX...

Ask me how I know