I think a lot of people can find reading really intimidating because they feel they have to read the literary greats (which can be linguistically inaccessible), and while I believe those have tremendous value I also think they aren’t requirements. If you want to read exclusively romance, or YA fantasy, or murder mysteries, go for it. I think when we put parameters on what should or shouldn’t be read we make it feel like a chore or an assignment. But I think there is infinite value in your airport paperback as long as you are finding true enjoyment. Anyways this is basically a long winded way of saying, read what you want and don’t feel like you aren’t as good of a reader just because you aren’t reading Hemingway.
P.S. this is my professional opinion as a real life librarian