I'm no archeologist, but I'm not sure the case for this being a Slav is that much. I accept that's a South Baltic ax. But the presense of an Arabic coin (I'd be surprised if there's only one) shows this person was recipient of goods traded from far away---why not an ax? Also, I hope a forensic archeologist has checked the sex of the bones. ;-)
Still, I may be too doubtful. It's good to see evidence of mobility and trade in what too many people think was a "Dark Age".
Medievalists and Medieval-adjacent. Sort-of.