There's no reason why they can't find talented 18- to 20-year-old actors to play angst-ridden roles. It would make the stories that much more credible as the actors age in the course of the series length.
Fox News has consistently delivered false and misleading information to its viewers about the climate crisis. New leaked emails now suggest that this bias comes directly from the executives responsible for their news coverage.
Understanding how your company operates is important, and frequently rules go unlearned until they are accidentally broken. Whatever your own workplace rule is, it's there for a reason and meant to be followed.