https://imgur.com/gallery/ik7ZN

There's another factor too. D&D tends to draw the creative types. Writers make intricate characters and environments. Artist create character portraits, maps, and props. The game inspires creation, and these skills translate to other media.

So media writers often have some experience with D&D, and given the chance they'll write what they know.

While I'm here, anyone know the sauce on the hologram table right above 1st GotG pic?