You can't give an objective profile on someone who was great in bed last night (come on, you know he was great). This unique form of in-depth journalism can also be seen in House Of Cards, 50 Shades Of Grey, Top Five, Thank You For Smoking, Trainwreck, How To Lose A Guy In 10 Days, Crazy Heart, Adaptation, Three Kings, and Gilmore Girls. At best, these fictional reporters are doing it to chase a story, because screenwriters think the only tool available to them is their vaginas. At worst, they do it for the sake of having casual sex, because what's a little professional integrity against getting laid? Actual female journalists are even getting annoyed by the trope.
Meanwhile, male journalists might be manipulative or rude, but almost always resourceful in ways that don't involve their genitals. For example, in Frost/Nixon, David Frost performs an excellent interview, and somehow manages to resist going down on Nixon in the green room. How on Earth did he manage that?