In this case, parent laid out their thoughts already and didn't make it a "I'm going to pit my value/belief against yours and not bother to elaborate because I'

In this case, parent laid out their thoughts already and didn't make it a "I'm going to pit my value/belief against yours and not bother to elaborate because I'm right" situation, which is where I find something like "let's agree to disagree" banal. I think it can make sense if one expounds on one's value and leaves off with that phrase because there's a legitimate impasse (which may entail more discussion to discover). Parent was more making an observation of the examples not fitting the definition, so there's not really a value judgement.