The problem with coming out with stuff like that is that it makes you look like a narrow-minded fanatic who's making a very emotionally-charged point rather than a rational one. You'll never persuade anyone of anything if you approach the issue like that.
Tell that to Alex Jones/Glenn Beck/John Edwards/Sylvia Browne/Simon Cowell ( the list could go on and on.) and their legions of fans. Big personalities, with strong views attract followers. The guy saying " Well maybe she could possibly not be using the methods she says.", gets ignored.
Sure, in debate world, it is great to say " If we are just nice enough people will listen.", but in the real world, people are looking for faith in your idea, they arn't going to do research and find out if your right, they are going to make their descision based on how much you seem to believe it.
And of course there is us, those in the minority who do not do this, but the difference between debate world, and the real one, is that outside of our forums, we, and those that use the same methods as us to come to conclusions are in the minority. In the acting business it is called "selling" ( for example, your doing a show in a working class town, your not going to toss in bits about how hard it is to be a doctor. ), and that is one thing i find the skeptic movement is seriously lacking, and our opposition has in spades. By being nice, and giving people the benefit of the doubt, we are essentially preaching to the choir, doing things that will impress those already in tune with our beliefs. If we want to be anything other than the minority, we need to "sell" our point of view more. We know we have the steak, now we simply need the sizzle.