Many experts feel they have the right to ignore other experts in their field. It's scary how some doctors pick and choose the research findings to reinforce their perspectives, regardless if it's fact based.
I also remember hearing from a vet student that their mentor used older techniques, medications, and practices for certain things, but because he had used them for decades were way more comfortable using them than newer techniques (which can some times be more idiot proof, but less nuanced). That student was convinced it was better than if he had stayed up to date and used modern practices.
Similarly, I remember hearing about aviators relying on automated controls so much that they're less capable in emergency situations. I'm not sure what you can do about that. Ideally, in aggregate passengers are safer overall.