“PAA: He’s not an Ashkenazi Posek. He might be an Ashkenazi; he might be a Posek. But he is a Posek for an era before there was ever a difference between Ashkenazim and Sefardim.”
Fair enough. Did you watch the interview of R’ Bar-Hayim by R’ Yair Hoffman? Much of his ideology/methodology is explained in it, although it is about two hours long.