"The data journalists were convinced the uncommitted vote was not terribly significant, while the storytellers saw it as nearly earth-shattering."
Count me somewhere in the middle but leaning towards the data people.
The uncommitted vote in the Democratic primary was significant enough to measure a very real protest. BUT Biden still walked away with 80% of the vote which is an overwhelming win.
Also believe that the thinking is that "uncommitted" will grudgingly show up for Biden in the fall, but there are a significant percentage of never-Trump Republicans who will sit it out or vote for Biden.