I mean rewrites. They're very often just plain wrong. What I'm interested in, almost the only thing I'm interested in, almost always, is why someone thinks something needs to be changed.
I believe there's a helpful quote attributed to Neil Gaiman like this: "If someone tells you why something doesn't work for them, they're almost certainly right. If they tell you how to fix it, they're almost certainly wrong."
Or words to that effect.