Author self-publishes book. Reader buys books and begins reading it, noticing similarities to another story she's read. Reader publishes review to Goodreads with lengthy excerpts showing near-identical passages to the other story. She makes no accusations and lets the evidence speak for itself.
Author denies it and her fans pile on the reviewer accusing her of bullying and harassment.
This is the type of 'bullying' Goodreads deals with. I wonder if the review will make it to the end of the day under their new guidelines.