I don't think they are pretending they figured out a way to fake depth, it sounds like they have created a compact head-mounted light field display, which is absolutely a huge step forward. Unlike classic stereoscopic technologies light field displays let your eyes refocus the image because the displays recreate the direction of the from the object as well as the color and intensity. NVIDIA demoed a compact head mounted light field display recently that explains the concept. See it here https://news.ycombinator.com/item?id=8451746