Are you saying that that text implies that the you can undo the rebase with a single command or that all the reflogs get updated atomically? Or how is it related to the comment you replied to?
Oops. No the text implies that I can't read and answered to a claim which you didn't state, namely that --update-refs can only update specific refs. (This was given by another comment.)
Yes, this is something, that JJ provides and Git does not.