Maybe they just watch shows passively, like my grandmother does. She watches Murder She Wrote, Judge Judy, Jeopardy, but she doesn't really care about any of those shows and doesn't really absorb what she watches.

Or maybe they mainly read books or play video games or just don't consume entertainment at all

Video games. I would much rather control what I am viewing on screen. It's not even about actively engaging my mind, I just much prefer to play something than watch something. I do watch things while I eat, but that is solely YouTube and mostly from creators who seem like normal people rather than anything with a big budget.

Similarly, I absolutely will not sit there and watch a Twitch stream either. I much prefer to play my own thing.