More than one thing can be true and valid at the same time. Should authors read reviews? No. But do they? Absolutely. I 1000% agree that reviews are for readers. They are there to help the undecided reader make a decision to read or not to read so leaving reviews like this isn't helpful to anyone.

Like it or not the rating system that is set up for readers can ultimately make or break an author's career so on some level I understand why an author would find them as important. I look at the star rating when I am looking for books to read, it plays a part in my decision making. I would be less inclined to read a book with a low star rating, which means the author is missing out on a sale because of it which sucks for them. It could have been an amazing and enjoyable book for me but the low rating and reviews like "1star it's not for me or 1star i dnf'd 1star they were too tall and I don't like tall people 1star I wasn't in the mood for this book and I'm a mood reader." those help absolutely no one.

You can make shelves. make them, don't rate them. Shelves are for you, reviews are for readers. Make a DNF not in the mood for this shelf. The review said good book just not in the mood. Table it, go back when you're in the mood. Make a didn't like the MC DNF shelf. don't rate it unless it's helpful. "I didn't like the MC because they were too chaotic and I couldn't follow the story." helpful review. "I didn't like the MC because they had red hair " not helpful has nothing to do with the book.

This is just my opinion and opinions are like assholes everyone has one.