If the store named "(thing) Joe's" builds its entire business on "we sell Trader Joe's products", there is a very reasonable case that they're confusing (possibly deliberately confusing) the public about whether they are or are not an actual Trader Joe's. Which... brings trademark law into play.
So, like I said. Maybe it's time for you to go back to law school.
So, like I said. Maybe it's time for you to go back to law school.