Because their trust isn't based in logic or empiricism, it's entirely a dogmatic reaction to the idea that they might be associated with those icky, backwards conservatives.

They don't care about or even really perceive science, or the scientific community, as they actually are. They like the idea of science. Actually that's not even fully accurate, it's more like adopt "liking science" as a personal brand because it makes them feel smugly enlightened to do so.

TL;DR the truth don't matter, feelz over realz.