Exactly. Simple language is a thing. And for some people it’s actually important.

If you’re learning a language or have some form of learning disability, you simply can’t understand “real” books.

Hell, there are books in my native language that I can barely read (Kant is about as nice as the name implies).

The real question is: how good is it? If 80% of nuance and details are lost, it may not be of use.