I know it’s not middle earth, but the trolls in “Willow” were awesome, so thats my choice (stupid answer eh?).
Whenever you blast one with a magical wand great things happen! The bloody meatball with dragons heads was awesome.
Maybe the producers are making political points ?
The 2nd URL link points out that the book is written in 1996, and the producers related their show to US presidential administrations that did not yet exist at publishing time.