Fuck that feature.
If the author made mistakes. Show how many revisions were made, but respect the author's wishes for the current version being the one still made publicly available. If I write a book, or an article, but I make a mistake, or a retraction. It should be up to me what is seen, or not as the original author. I am just sick of fucking up and everyone seeing my fuck ups, because I have a hard time sometimes with typos, or desiring to rephrase it.
If someone wants to know what I originally wrote. Make a way back machine for people interested enough to dig through history of revisions, or something if they want to go sleuthing around to see my typos.