If someone's words do not represent their ideas, I will notice that because it is relevant information. It's all a matter of degree, but if someone was afraid to tell me they dislike classical music, said they loved it, and I later found out otherwise, my response would be to notice they can create discrepancies in communication. I would also wonder why they struggle to assert their own ideas. I would take their communication with a grain of salt, and possibly tell them directly that I appreciate people with different likes and dislikes than mine and that it is okay to voice those because I want to get to know the real person and I'm pretty laid back about stuff like that. In the future if I wanted to be sure to know their opinion, I would either work harder than merely asking once, or would tell them that I want to know, but that all I can go by is their words and so I will need them to tell me. I'm not sure how much more I could extrapolate than that.
When I hear someone describe how that sort of communication is a deal breaker, I also wonder about their experiences and how they see that, but my conclusion is much like a grey fog. It is quite indistinct and has many possibilities, but without certainty. I guess these things don't trigger a conclusion, but can capture my interest to observe, learn, and eventually make sense of it when it happens in my personal social environment.
As an NF I have hundreds if not thousands of observations in process relating to individuals, group dynamics, and core issues about humanity. Except that it is not a game, it could be compared to playing dozens of chess games simultaneously. I have an overwhelming sense of the complexity and the unimaginable number of nuanced details. There is this sense of respect regarding how difficult it is to make determinations, but the hypothesis and strong hypothesis I create are not the result of a snap idea. If I have any degree of certainty, I have invested a tremendous amount of information gathering and analysis before I create any sense of pattern or make a statement.
edit: I'll compare it to watching the water on a lake. It is dynamic, constantly changed and interacting with the play of light on its surface. The waves are like the individuals acting on one another, but still articulating their individual presence. No one exists in isolation but is an action and reaction to those around. The larger dynamics of the lake impact the waves. There are core issues related to humanity that impact us as individuals. My thoughts are not a state of judgment because everything is a process and it is impossible to zero in on a single point and hold it responsible and attribute all power and responsibility to it. It is both an extremely detached and intimate process which is quite difficult to put into words.