Amazon provides the affiliate revenue, so Amazon products are what gets linked. I'm not opposed to the business model, I use affiliate links to monetize my site, too. But it does seem silly to shy away from admitting that this is trying to make some money from the links.

I don't think they are shying away from it - it's pretty clear in the about page. Seems like a totally reasonable way to get some revenue for the site.

I was referring more to OPs answer in this thread.

Yes, amazon dominates the product links, so it was easiest to start with that. In the future though, I'd love to add more.

The whole point of the site is to make money via Amazon's affiliate program.