Farmed bees mating with native bees causes GLOBAL PANIC (a bit)

Well, my knowledge of genetic biology is pretty sketchy, but this story smells funny: https://www.newscientist.com/article/2220430-farmed-bees-are-mating-with-native-bees-and-that-could-endanger-them/

The logic of the argument is roughly that interbreeding reduces genetic diversity. The orignal paper is here: https://www.biorxiv.org/content/10.1101/783878v1