No, you are just wrong about this (like many people are). There are 2 very different forms of „warranty“. I don‘t know how to differentiate those in English, but in Germany the „warranty“ from the maker of the product is called „Garantie“, the obligation of the seller of the product is called „Gewährleistung“. The first is voluntarily given and varies in length, the second is an obligation by law. The first means that the maker will repair/replace the product for any reason (other than you breaking it). The second means that the seller has to repair/replace the product if it was alrady defect at the moment you bought it. Only in the first six months after the sale the seller would have to prove this wasn‘t the case if he refuses to repair/replace the product, after that the buyer would have to prove that the product was indeed defect from the very beginning, which is obviously very hard to do.