Being nice can reduce everyday friction with people who are acting in good faith but it does nothing against someone whose real problem is that you bring awareness to the things they would rather avoid. You can be calm, careful, generous, precise, and compassionate, and they will still not like it if the truth threatens their self-image, control, convenience, or access. Then thoughtfulness gives them more room to cloud the situation because you keep considering their perspective while they use that space to distort yours. We can soften the language, explain the context, acknowledge complexity, avoid humiliating them, and make it clear we are not trying to seem perfect but they still focus on our tone, reinterpret our motive, or invent a version of what you said that is easier to dismiss.
We were raised and socialized to believe that if we were thoughtful enough, fair enough, clear enough, and gentle enough, people would meet us in good faith but kindness does nothing against defensiveness, good faith does nothing against defensiveness. Empathy does not make someone honest. Perfect wording or phrasing cannot force another person to reexamine a lie they have made their own self to believe. All that effort to make the truth hurt less often only made us pay more before receiving the same punishment.
We can remain thoughtful because it reflects our integrity. But we don’t have to treat niceness as the cost for possibly being understood. That tradeoff never protected us. It protected other people from feeling the full force of what they choose to stay blind to and continue to run away from.