Trader Joe's and their pattern of copycat merchandising
tastecooking.com
tastecooking.com
I think it's hard to argue consumers are genuinely confused and think "That For Sure Isn't Butter" or "Trader Joe's Generic Foodstuff" is actually the brand name. Even in the article people weren't confused, they just thought the brand might have been contracted to make the generic like how people assume Kirkland Vodka is just Grey Goose.
I think foodstuffs is one of the industries that hasn't been wildly distorted by IP games thanks to some accidents of history. I would argue that the crazy amount of competition and variety that came from it is a property that should be emulated not eliminated.
For larger, nationally known brands, that makes sense. But for smaller brands like this article is about, TJ will expose many more people to the product than were originally exposed to the brand, leading the original brand to appear like a knock-off.