we have a tendency to think that facts in themselves are persuasive, they aren't
or that if you show the logic they will be convinced, they won't
Conservatives know that people don't think and just accept what they are told if you have their trust or respect and if you tell them it's for a good cause. Maybe give a supporting fact, which may or may not true.
The belief that people can be convinced by facts and logic is the greatest failing in all moderate left leaning political parties and is a belief that is ironically not supported by reality.
I think the belief comes from respect, you respect the agency of others, you would never tell them lies or try to persuade using emotion
that is not how humans are made, we are foremost social animals , so if you want to change minds you must first gain trust