I just put the first ten paragraphs of Chapter 1 from the Bible Teach book through a Gunning fog Index calculator.
Here is the result: The Gunning Fog index is 6.125
The index estimates the years of formal education needed to understand the text on a first reading. In other words, this book is written at approximately a 6th grade level.
So they're simplifying that. This suggests that the WT leadership is lowering the bar on their expectations for their converts.
Maybe they think that people aren't smart enough to understand "the truth." The problem is that their beliefs aren't hard to understand, it's that they don't make sense!
Let's review: It's a cult!