If you search the web for the meaning of dibujo objetivo (objective drawing), the result will be that the author does not express personal emotions or judgments, but he rather presents the product in an impersonal and objective way for informational purposes.
From my experience as an Erasmus student at the Polytechnic University of Valencia (ES), in the Fine Arts section and in the dibujo objetivo subject, it could be said that even the way of representing the object expresses the artist’s subjective and personal perception of reality. The line, shape, and dimension are determined by the artist who creates it.