This is interesting, because it certainly has a deal in attractiveness of public figures: they often on the screen, we talk about them, we think about their actions.
So we can increase likeness by being nice and by being worth to think about.
I'm not sure if that was mikeknoops's point, but the study does not support that "[uncertainty] creates insecurity and a desire to settle the uncertainty in ones own favor". They merely say that the participants thought more about the men, heightening the attraction. This may or may not be explained by your theory.
"Uncertain participants reported thinking about the men the most, and this increased their attraction toward the men."