The current popular mainstream politically correct stance is that "the science is in and the time for debate is over." That is a fact, and if scientists find it efficient to go about it that way (rather than correct that somewhat incorrect stance), then there will be a small portion of people who will dig their feet in against those sorts of dishonest tactics. And furthermore, some of these people will write convincing rebuttals (after all, there is a completely science based disagreement with the status quo opinion) that voters who want to not believe will typically interpret as "the scientists are lying to us!".

Until the scientific community comes clean, as well as "polices" the outspoken public advocates, the climate change cause will always have this Achilles heel - I am not pointing it out to win an argument, I am pointing it out in the hopes that they fix the problem, as I believe the theory is mostly correct.