Earlier quoted context omitted.
More specifically, the responsibility for chasing down the manufacturer for a refund is shifted onto the retailer, not the consumer.
Yes, and therefore the retailer is incentivised not to sell junk in the first place. The problem with being an "everything store" is that everything also includes an overwhelming majority of crap, looking at you crappy "genuine sony" camera batteries that held about 10 minutes of charge, fulfilled by amazon.
Most retailers seldom care, as they have agreements and well established paths to dump the cost of returns onto the manufacturer.