Why does the article call this “Biblical Egypt?” I thought the graves from the time of the Exodus were found by Manfred Bietak, at Tel ed-Daba (Avaris), about thirty years ago.
Oh, that's what you meant over there (points toward another website)... Bietak claimed Tel ed-Daba was Avaris, based on nothin' much. The residential structures are of a type more familiar in the Near East (Egypt being part of Africa). As far as its being ancient Avaris, there's no textual records at the site, and the ancient world seemed to not put much effort into "welcome to such-and-so city" signs. :^)
Bietak's been firm against those who would jack the timeline even longer based on the supposed supereruption of Thera, which is an admirable stance.