I get that, most people are like you, it’s normal. Best thing for everyone is to avoid those persons.
But my point of view is a lot more optimistic, i think having this behavior isn’t all their are defined as. They can still grow and learn, especially on other area of life.
Depending on how much they rely on this behavior you can have two approach…
If it’s little, you can teach them better without them knowing, as long as it doesn’t directly clash with their dogma, but it requires to be subtle.
If they rely to much on it, the best course is to detach their opinions from the real world and only speak to them with very down to earth things.
I know it will not always really work, most of the time my optimistic view is to idealistic. I can have it because i’m more tolerant, maybe too much.
The goods thing is, even if i’m wrong, i can enjoy myself doing this, and for the rare time i do change something in that person, well that feels great.