Why can’t I add my affiliate links?
| Affiliates | Posting is not permitted for the promotion of affiliate sites or products sold through an affiliate marketing relationship. This includes item pages that are made up primarily of advertisements, or pages where advisements obstruct the view of the item. |
Well, that makes it pretty clear that affiliate links are not allowed. But it doesn’t go into the reasoning. For that, you need to rewind your SEO memory about 3 years.