So I'm curious if that is what the authors of this new study claim to be refuting. I think so, but it's unclear since they deliberately decline to mention the race they are referring to. Perhaps I should have quoted the sentence from the paper that I'm referring to (principally), "During this paper, we only refer to the dynastic rulers as the Hyksos, not the elite attendant to the rulers nor that ethnic group with which they are associated."
From my History Channel knowledge (not expert in any way), there has been a revival of interest in identifying the Hyksos with the Hebrews due to the location of a signet ring in Avaris by the archaeologist Manfred Bietak with "Ykb Hr" (Jacob?) inscribed on it. There is also a tomb with a statue of a Hyksos ruler who seemed to be almost as important as Pharoah himself, complete with what appears to be a multicoloured raiment painted on the statue.
Armed with this dumbed down version of archaelogy my interest in the paper is piqued. But they aren't so clear what they are refuting.