Rose, I did that search, and saw several unaltered vintage necklaces on the first page. I looked at listings in detail, and they are described as "a find" and talk about condition. That is not how an artisan describes their work.
This happens during the listing process when the seller chooses "I made it" from the drop down options for who made the item. It is not a search engine bug, it was caused by category misuse. You can report these items to Etsy, but I have never seen the staff do anything about mass made vintage, unaltered, items listed as handmade by the seller.