Nothing is sold
This site does not sell or share personal information, and never has. There is no advertising network, no data broker, no analytics profile and no mailing list operating on this site.
Under the California Consumer Privacy Act as amended, and comparable laws in other states, you have the right to opt out of the sale or sharing of your personal information. There is nothing to opt out of here, because no such sale or sharing takes place.
If you want to be sure
Write to [email protected] and you will get a plain answer.
Once you leave
Following a link to Amazon puts you on Amazon's site, under Amazon's policies. Their opt-out is handled through their own account settings.