People that spend energy on arguing their right to have opinions rather than defending the opinion are deeply uninteresting and often stupid people that I don't not respect in any capacity.
I described a behaviour and two qualities. I said that people with the behaviour often have these two qualities. I then said I dont respect people with that behaviour.
There are a lot if people that are stupid but still fun and interesting people. They have skills that I don't have and perspectives that I don't have. They have found ways to interact with the world that works with their shortcomings. I respect them.
Some stupid people decide to hide their stupidity by spending a lot of time arguing that they shouldn't have to elaborate on their opinion and we should treat all opinions the same without scrutiny. They dont grow, they dont learn, they make their own shortcomings other peoples problem. I dont respect them.
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.
I unironically think I respect them more than you do. If I had to chose between a uninterested moron and whatever smug energy you have, I would go with the moron.