Thanks for the further info. I understand the point of the rule.
However, I still really don't understand how me linking to an Etsy shop that I am in no way affiliated with and make no money from (and, for the sake of this hypothetical, this isn't a shop that any poster on the boards makes money from it either) is not allowed, but I can link to Macy's. I make no money from linking to the Etsy shop, and I make no money from linking to the Macy's shop. Someone does, but I don't know them. But it seems to me that there is a categorical ban on any Etsy links, and yet there is no similar ban on Macy's links.
Am I correct in stating that I cannot link to an Etsy shop that I have zero connection with and yet I can link to a Macy's item when I have no connection to Macy's?