Degenerate neo-Thomism?

Is it the case that some Thomist philosophers think they can do theology because they've read the theological works of St. Thomas, relying upon him alone without consulting Sacred Scripture and the Fathers, and thus reducing theology to some version of philosophical theology (or metaphysical theology, as it is styled by some Orthodox)? They may give attention to conciliar documents and papal statements as boundaries for speculation, but that isn't enough.