It’s literally not in the article bro.

It’s in the part that says “If you’re curious what kind of haphazard observations Amazon is keeping on you, you can pull up the page by clicking on the “Account” link under the Account & Lists drop down menu. Scroll to the bottom of the page you land on and click a small link that says “manage your information” and there you have it. On mobile, you click on the profile account icon on the bottom bar, hit “Account,” then “Shopping preferences,” and then “About you.”'”