If you make art, people will talk about it. Some of the things they say will be nice, some won’t. You’ll already have made that art, and when they’re talking about the last thing you did, you should already be making the next thing. If bad reviews (of whatever kind) upset you, just don’t read them. It’s not like you’ve signed an agreement with the person buying the book to exchange your book for their opinion. Do whatever you have to do to keep making art. I know people who love bad reviews, because it means they’ve made something happen and made people talk; I know people who have never read any of their reviews. It’s their call. You get on with making art.