Certainly not in Amazon. Surely there can be exceptions but in general the company has a culture of simplifying stuff anywhere is possible.
IMHO the largest contributor to over engineering in this company is people suggesting flaws in other's designs simply to have something to contribute during a meeting. I can't remember anyone, ever, telling me to remove something from a design doc (3.5 years).
I have added unnecessary complexity to my own designs as a response to comments. Not customer driven, not data driven, but somebody at a meeting got focused on something and it ended up getting added to the design.
I've had unnecessary complexity introduced to my code during code reviews as a response to comments, too. Most often it's to make things "more testable" so as to reach an arbitrary code coverage target.
https://raw.githubusercontent.com/aws-samples/aws-refarch-wo...
Ironically, that's how you are supposed to run Wordpress on AWS.
My original comment was 100% based on my experience as a developer at Amazon.