Somewhat related but for years I've been surprised by how irrelevant the items Amazon recommends on my homepage. They have decades of my personal shopping data

Somewhat related but for years I've been surprised by how irrelevant the items Amazon recommends on my homepage. They have decades of my personal shopping data along with credit card, demographic, media interests, and lots more. The irrelevant suggestions + cluttered homepage UI makes Amazon only useful when shopping for something specific.