Is this evidence of time travelers on Goodreads? :-)

Long-time romance author Milly Johnson said: “I had a one-star rating for a book that hadn’t even been seen by my copy editor. When I raised it with Goodreads they wouldn’t interfere as they said the reviewer had a perfect right to predict if they’d enjoy it or not. I’m afraid at that point I washed my hands of them as a serious review site that should have some code of conduct. We all get bad reviews but at least we should expect any review to be fair." 

https://www.thebookseller.com/news/authors-hit-by-bad-reviews-on-goodreads-before-review-copies-are-even-circulated