At most, phallus size often—not always—predicts whether a person has ovaries or testicles. Similarly, blood flow to the genitals doesn’t say anything about what the person wants or likes (or should want or like). No. At most, blood flow to the genitals often—not always—is simply information about whether a person has been exposed to something that their brain interpreted as sex-related—with no information about whether they wanted it.
