Anyone who takes a stance for right and against wrong (or at least their possibly flawed perceptions of it) is going to appear “narrow minded” at times.
I think most people are very narrow minded when it comes to running red lights or driving recklessly in general. You have to drive on the correct side of the road, in one lane at a time, go a certain speed, not bump into anyone, follow all the signs. Seems pretty narrow minded in comparison to driving all over the place regardless of whether there are roads to take, structures or people in the way! But it’s necessary to drive safely.
What else are we narrow about? Any sort of test at school where there are right and wrong answers. Notably, mathematics. You cannot just put down random numbers and demand that your teacher says it’s right. It’s not.
There are grammar rules, where we use the same 26 letters to form words and make sense with them. Not following them runs the risk of confusion or misinterpretation.
How about building things? You have to know the right math for the right physics for the right engineering. Not much room for mistakes, because you’ll put others or yourself in danger.
Or knitting a sweater. Do it right or you won’t have a sweater but a mess of yarn.
The way biology works is often narrow minded. If one amino acid is changed in someone’s DNA, it could give them a terrible disease.
I could go on.
See, while there are definite rules governing the world and society, most of the time we think nothing of them, because they are not “restraints” but guides on how to
do something, rather than shrivel into failure. Catholics recognize that this doesn’t suddenly end when it comes to our moral lives. We aren’t perfect either, but some of us at least want to be good, and help others to be good too.