A friend who knows the scene writes: First, their findings run counter to classic theory with respect to depression caused by inbreeding. Second, no beneficial mutations are discussed, only benign ones, and then deleterious mutations of varying degrees. Much as in Michael Behe’s Darwin Devolves.
National Geographic: In 2016, the International Union for Conservation of Nature had already downlisted the giant panda from endangered to vulnerable, citing a steadily increasing population and expanded habitat. But some Chinese scientists and officials rejected that assessment, saying it was premature and could undermine panda protection efforts.