Some people have “evolved” in the their thinking about certain issues that face our society. I agree that it is admirable to change one’s mind with additional information. Yet, it is not admirable to be pressured into changing one’s mind by others who want you believe (or at least support) their idea of what should be. Such change shows weakness, not conviction.
As always, we need to see consistency of basic principles and the only way to see those is to ask them or they tell us. An adult has had time to think about those principles and very little should change as one gets older. This does refer to being “set in your ways” in a negative way, but to a well-thought-out conclusion, consistent with firm beliefs.
We get too little of that. We get more of the blowing winds of adjustment that change with the current trends, almost daily in some cases. I like predictability and the security that comes with being able to know with some certainty what a person will say and do. Look for that in a person, unless you like guessing.