I would say yes.

I use Amazon links when I reference books ( or maybe if I were doing a review of a product)

Once I used an Amazon link for a spice I used in a recipe.

If the link could be considered natural to the post, no problem at all.

And the "writers" who just spam links?

They will be scrolled past, and eventually lose interest here...maybe w/ the assistance of a downvote here and there ;>