Uh, if you actually knew anything about the products they make, you'd realize Denon's at the top of their game; their preamps, for example, are often considered on the high end of things (though with terrible UIs). The reason they made that cable (and the similar HDMI one) is because they also know idiots will buy something like that; read up on the history of the AK-DL1 and you'll see the whole thing was basically a joke that some people actually are dumb enough to buy into.
Fortunately their other products are quite serious and they don't do silly things with quality and price on that end.