What’s important about that study is not that women were found buried with weapons, it’s that women were found in earlier burials than we expected, showing that the earliest waves of Viking settlement in Britain included women.  It’s an interesting discovery, but it doesn’t fundamentally change our current picture of gender relations in Viking society.  Whenever you read a headline that says: “New discovery proves historians all wrong about X,” you can usually just mentally replace it with: “New discovery proves historians have been pretty much right about X since the 1970s.”