Steve Sailer writes: Because movie stars are movie stars because they appear to be highly sexed.
Emma Watson is an anomaly in that she was signed for an eight blockbuster run before puberty. At that point she looked like she’d grow up to be a beautiful young woman, but that didn’t quite happen, at least not by the extreme standards of movie star beauty. But she was heavily exposed by being in 8 Harry Potter movies. It seems like unhappy people gravitate toward her, daring the rest of the world to point out she’s not really all that pretty, and she accommodates their unhappiness by playing the offscreen role of political correct scold.