I wouldn’t consider reading as a passive consumption. You have to 1. Lead and follow a tempo, essentially moving your eyes at the speed of you thought 2. Using imagination to associate what you read with other knowledges.

TV and ticktock don’t need 1. You can interact with a remote or you scrolling-thumb but interaction is not required to consume.

2. Isn’t a necessity neither but people do use TV, ticktock or music to "empty their mind" by thinking to nothing else but the consumption flow. You can do that with reading, but that’s not an experience people usually like and they come back to the place their mind left.

Number two but in book form is "beach reads" which can include your favorite trash romance or the latest "dad book" Vince Flynn / Clive Cussler / Tom Clancy thing. And given the huge popularity of the two genres folks are reaching for books to turn off plenty.