> So in how I see it, the truth of something is orthogonal to its degree of emotional resonance.

I too agree that the universe objectively exists separately from our minds. However, there are many facts about the world, most of them banal. The ones that are useful to us or make the world feel more understandable regardless of their ultimate truth are the ones that resonate. In particular, art often expresses emotional truths about ourselves and our relationships to others. "We're all doomed." "We're all saved." These have little objective reality but can powerfully affect us at the right moment.