I never really understood the “Being right is overrated” mindset. It’s easy enough to understand the good of harmony, but that’s not really how I see it used. They’re not really oppositional, a person has to see it that way. And to the extent that cohesion is valuable, that's just built in to a better calculation of right. But saying it this way, I suspect means that the person doing the calculating needs to overstate this cohesion beyond its value. This is a convenient sorta trusim to make a case.
The premise is that there are factors beyond accuracy which are for the greater good. That seems reasonable, but what are they? There are things like peace and happiness, which sound great, but aren’t at odds with accuracy, or more precisely the pursuit of it. This isn’t really a tradeoff. When people frame accuracy as overrated, it seems they’re often obscuring and gliding over that they don’t have a counter argument. There isn’t necessarily one discoverable truth, but there are better hypotheses and more sincere attempts. To the degree, that optimizing for peace and happiness can be a better goal, the measure of those things is typically self-centered. They would be happier. It can be group self-centered too, as in our team would be happier. It’s not a neutral truism, it’s a personal weighing, of the value of the better outcome resulting from right/better/good decision and the desire for (at least surface-level) harmony.
But more important than that, even if the group would be happier, there is the false tradeoff thing. Embedded in “being right isn’t what’s most important” is agreement about what’s right. Why are we unhappy with something more right? Accuracy/truth seems conspired against at a dispositional level in this situation. Disagreement and disharmony are not the same thing. So it’s not even disagreement leading to disharmony. It seems more of a personal desire against either a particular outcome or against disagreement generally. Both questionable. Relatedly, diplomacy is not a bad trait exactly, but I don’t see it as essentially positive. It betrays a lot. It is a kind of tax, which can be worth it up to a point (there is value in the internal functioning of the group), but probably not as often as the truism has it play out. Something should be questioned when a person/team diverges so much from better/accurate/right.
The idea of picking your battles makes a form of self-centered sense, while also making a (I think large) form of nonsense outside it. There are many forms of dissent that occur before cussing or violence, it is much different to (1) disagree, (2) disagree, but go along, (3) disagree, but say you agree, (4) disagree, but convince yourself to agree for harmony (and perhaps eventually forget that you disagree). A phrase I’ve come to dislike is “I wouldn’t die on that hill”. People should defend, if not die on, more hills. It also might recruit others. We have all these hills that have been ceded because we weren’t willing to say we liked them.