This is a great way to frame a shift in perspective around what we consume, but just to add some nuance to this: not only should we be thoughtful about the content we consume in a similar way that we are thoughtful about the food we consume, but we should also be self compassionate.
Sometimes we want to eat those Chicken 'n' Waffles, just like sometimes we go on a trashy TV show binge! It's just a small thing that serves as a comforting release, and we shouldn't let the guilt overcome us!
Even "comfort food" (or the equivalent) can expand and exercise your thought.
I read a ton of what even I consider "fluff". Science fiction, fantasy, mystery, adventure, horror. Novels that get unceremoniously lumped under "genre fare".
But even if the primary motivation is entertainment, I can honestly say that from a young age, reading lots of anything exposed me to new ideas, ways of thinking, and perspectives.
Even something as simple as spelling and vocabulary seem to come a lot easier, if only due to having seen so many words written out over time. I remember being a kid and never really having issues with spelling or knowing most words because I'd at least run across them already.
That's not to say reading more "serious" material is useless. It just isn't an either/or question.
Sometimes we want to eat those Chicken 'n' Waffles, just like sometimes we go on a trashy TV show binge! It's just a small thing that serves as a comforting release, and we shouldn't let the guilt overcome us!