You misunderstood my post.

When I listened you examples of fiction I am ( edit) talking about, you said that fiction belongs in the category of “young-ish”

For this category to exist, it means that it is the most popular/tailored to very specific category of people. That also means that adults would not find this type of fiction appealing. Otherwise it would be just adult fiction.

My kids now at the age when they cooled down/outdrew storytelling, drama, dialogues and characters that are typical for adult-is fiction. The same happened to me many many years ago.