Can you suggest an equally terse title that would avoid problems such as "position[ing] scientific theories as normative rather than descriptive" and "mak[ing] refinement look like failure"?

I think you're assigning far too much wrongdoing to this perceived sleight here, I wouldn't even think that saying "our current understanding makes this look impossible" is a way of saying we shouldn't celebrate change and improved understanding, I would instead go the opposite way and think how interesting it is to find things outside our understanding