that is exactly right. Traditionally, when some level of good faith is present, some kind of logical argument is generally presented on both sides and the debate ensues about what you believed about the premises, not that the argument itself was groundless or not even logical. Often enough neither side's premises are verifiable and all you get is a good talk. For instance Tater might have argued based on something Friedman said about a market and I might have argued - sure but that part of the economy is not an efficient market in the first place. That kind of discussion can still actually be constructive, driving each side to examine the soundness of the premises and their logic. But Tribal and cultural based politics is all about emotion. Truth, logic, premise all fall to the wayside because the brain is demanding to believe what makes it feel good. It's not about rationality, it's about dopamine.
Now too be fully honest, most of us take positions based on their emotional/subliminal appeal, especially initially. But if you are willing to be honest and open yourself to argument, then at least some times you come to see that your initial position was a reaction born of the self-comfort mechanism and you are willing to confront yourself with the need to admit that the facts don't support what you would otherwise prefer to believe.