I believe this has been proven false time and time again.
Where doctrine and reality clash, only a minority cling to doctrine while over time the majority embrace scientific reality. This has been demonstrated in the polling I referred to in an earlier post ...
If you said, "When doctrine and reality clash, there is a reluctance to cast aside doctrine," then I would completely agree with you. People are naturally reluctant to change core beliefs, whatever they are. History, however, shows that over time this reluctance is won over by the weight of evidence.
If you expect people to immediately change their minds the instance new information becomes available, then you are being unrealistic. Change takes time. But in the end history shows that in the conflict between doctrine and reality, reality wins.