[yamtaddle]

I think what's so shocking is these books are already so damn simple—they weren't considered challenging to their target age group even 20 years ago—but they're still too complex for 'em. It's like if there are two clauses they can't keep the first one in their head long enough to make sense of the whole thing, and god forbid you need to track an idea across multiple sentences.

I have a suspicion that the trend dates back much earlier (60s? 70s?), and owes to de-emphasizing poetry in English classes, since reading poetry requires heavy tracking of complex context over long stretches of text, making even fairly-complex prose mostly seem easy by comparison. This may just be a continuation of that trend—kids' lit gradually getting simpler in response to declining literacy that is itself due to shifts in curriculum focus, causing an ongoing, further decline.

[cld8483]

You may be right, but I'm not convinced. I believe many Jules Verne novels were once considered "young adult" fare, but (in the original unabridged forms) became challenging for young adult readers in the 20th century. I think natural drifts in language are a major factor in this. The stories and characters are generally simple, but the texts themselves become more challenging as time passes.

Or take Shakespeare for example; he wrote for the unwashed masses yet his writings are considered sophisticated and challenging today. I have an anthology of English renaissance drama from various playwrights that I revisit from time to time. The stories are usually quite crude and funny (example: https://en.wikipedia.org/wiki/%27Tis_Pity_She%27s_a_Whore), but understanding them well enough to appreciate that humor can be a chore. I don't think these stories were considered difficult originally, but became so over time.