This is 100% about control, as others have said. They don't trust the publishers to get it right? Why? Because it's an absolutely ridiculous explanation, and a totally fabricated prophecy!!!
Maybe I'll comment about the effectiveness. Raise my hand:
Conductor: Brother Quietly?
LQ: Um, I have a question: Why did the Witness in the demonstration use verses from Daniel 12 to attempt to convince the householder that Daniel was confused in a completely different vision and a complete different time in his life, when, according to Daniel 4, he clearly was NOT confused???
Conductor:
Conductor: Ok... anyone else?
-----
Or maybe:
LQ: Um, I have a question: How EXACTLY did the Witness in the demonstration connect Luke 21:24 to Daniel 4? I'm confused about that, since there doesn't seem to be any connection except the word times, which, frankly, is too generic to have any such connection.
-----
Or maybe:
LQ: Um, I have a question: Since we convert 1,260 days into years and multiply by two, and we get this number from Revelation 11:3, why isn't the time period the two witnesses in Revelation 11:3 converted to years? Shouldn't they witness for 1,260 years?
-----
Or maybe:
LQ: <stands up> HOW CAN ANY OF YOU BELIEVE THIS BULLSH**!!! <walks out>
-----
One can dream, can't he?