People don't have faith in inanimate things like science. They have faith in their leaders, who then lead the way in what to believe.

If those leaders believe in the integrity of the scientific institutions, their flock will follow. If they're anti-vax, their flock will follow. If they believe in some medical quackery, their flock will follow. If they believe in eugenics, their flock will follow. It's happened before.

What was fringe yesterday can become mainstream today, with the right leaders.