Yes, that is true. But I think it has to be compared to how much you liked this product VS others who do the same thing. Not "I thought this product did X" (but it was never specified for example) and then leave a 4 star review after returning it, or similar cases. Maybe I ordered this thing and thought I would like it, but because of something not-the-fault-of-the-product-itself I ended up not liking it, I don't think the seller should suffer from it.