Someone is trying to use autosomal DNA results to "prove" that Mary Justice who was married to George Green was descended from William Justice and Mary Fraeme.
Autosomal DNA results *are not that specific*, and the connections may come through *any* common ancestors - even ones that people don't know they have in common. (The claimant admits to having matches to the Atkinson family "as well".)
I don't know why some people are so DESPERATE to believe in a connection to William Justice of Kittawon, or so HORRIFIED at the thought that their ancestors may have come from Massachusetts (or worse yet been Irish). This particular person probably would not blink at the thought that the entire Massachusetts Justice family was genocided down to the youngest baby, rather than admit any possible Massachusetts connection.