Their well known, casual, disrespectful, insolent, automatic, inexplicable, mass rejection system is now well known and well described here and everywhere on the web. Nothing to add, just an additional point of view from a professional musician, perfectly compliant with the voice of the web.
My advice, for the customers, is to buy your stuff from pond5, motion elements, Premium beat: they are serious, respectful and have a great and fresh catalogue. And for the artists: same thing, use these great and MODERN libraries.