It's not really about missing black and white. I'm inclined to say it's the opposite. Too many people have gotten used to bending or ignoring the truth in favor of their ideology (whoever you're thinking of: not just them). In their minds this seems to be a matter of defending some "higher truth", or rather keeping people from pesky details that might prevent them from coming to the "right" conclusion, but they forget reality is made of pesky details. Any ideology that drifts from reality is doomed to not only fail, but probably cause a lot of suffering on the way. Truth matters, all of it.

Anyway, in a war these pesky details usually blur the nice black/white, us/them narrative that gets people motivated to fight. I mostly agree with your post, just wanted to say my piece on that.