It takes a lot of life experience for someone with integrity to find out that other people are simple dopamine hunting monkeys who will flip flop to whatever social pressure is being applied at that present moment. We assume that others are like ourselves.

And so the very people who are supposed to call out and fight the irrationality are actually blind to it. You do get people calling out the irrationality, but mostly they are driven by social incentives rather than duty and so they turn their eyes away from realms that are deemed pure. They have no incentive to look inwards to the scientific institutions because that way they lose the social esteem they gain from association with the scientific establishment.