Well, I'd point out that they had evidence for Miasma but ignored when it didn't match their theoryThey were denying germ theory for centuries.
Also, I think a lot of it had to do with doctors feeling blamed for killing patients when they didn't sterilize equipment or wash their hands
That's very similar to coal companies and their response to climate change. They dont want to be in trouble. That's far more important than science or data