Perhaps people write such bad reviews because they've read such bad books.
In any case, I link you all to
"Bad Review Bingo", which you can play along with that blogpost*.
* Also, from a reader perspective, seeing authors publicly express such disdain and contempt for people who presumably took time out of their lives to actually read said author's work, if not actually pay for it, even if they ended up seriously not liking it and said so on the internet, is kind of fun, but also ultimately a turn-off.
But hey, it saves me time and money by helpfully pointing out whom I never need read nor buy from.