That profile has been deleted, so I can't answer the question of whether the inclusion of Rabbi Joseph Krauskopf (whoever he was) in this project was correct or erroneous.
However, Howard Bregman's reasoning is ill-informed. First, as Haakon Chevalier points out, most Jewish families in Bohemia had German names (my own, for example); so the idea of ruling out a surname because it is "very German" is baseless. Second, as regards the surname "Krauskopf" in particular, it occurs in no fewer than seven Familiant books, according to a search at JewishGen; so there is no doubt that it was a surname borne by Bohemian Jews. Rabbi Krauskopf may have been a descendant of one of the listed Familianten.