"No. She's saying that as a younger woman, her fan base would include other demographics than (presumably) Jeff Daniels' fan base. Which is a fairly non-controversial statement."
That's what I mean: I don't think that necessarily follows. I think It mostly depends on whatever films/TV shows the stars are known for. For example, I'm guessing that Ian McKellen and Maggie Smith, because of their appearances in the HARRY POTTER films, would have a larger fan base among young audiences than far younger actors who are known primarily for movies or TV shows that appeal primarily to older viewers. Similarly, I'm guessing that the gender demographics also depend as much on the projects for which the actor is known as they do upon the gender of the actor.