I've tried figuring out how this all relates to my book (see bio!) but honestly, there are not a ton of "deniers" in #thelordoftherings
Wormtongue tries to convince Theoden not to act, but it's not a good faith argument. He wants Rohan to collapse because he thinks he'll benefit.
The closest might be Saruman. He thinks the new order under Sauron could be ok? "There is hope that way. Its victory is at hand; and there will be rich reward for those that aided it."