I can‘t find any of that in the German/EU version. Instead I can select interests if I want to. I‘m going to assume they don‘t have any of that heavy profiling here.

I live in the UK and used the UK web version, it has nothing. Maybe because I have almost entirely stopped using Amazon?

About You (at the bottom).

Now we know how you like it

For me, it was directly under account, there was an about you tab a few options below shopping preferences.

It says that I have an 11-year old child. Unless you count household pets, there ain't no such thing.

Also, it knows about two out of eight RAM sticks that I bought from Ebay. It mentions other AI assistants learned about me, and asked if I wanted to share. I think assistants from other websites are already sharing.

...ah. I used someone else's PC and account to ask Google questions about my computer build. My personal Amazon account is under the Prime account of that person.