For what it's worth, anecdotally, I have been asked to do a couple of reviews that I ultimately turned down myself, just because, after listening to the albums in question a couple of times, I knew that my review was going to be very negative because I just didn't like or connect with what I was hearing. It's a lot easier for me to do something like that since I just do this occasionally for fun, and it isn't my career that I get paid for and need to support my family. But the other side of that is that, unless there is a VERY good reason to criticize an album, such as its lyrics promoting something that is truly morally objectionable, I think it is poor form to be overly critical of an artist for putting out art that I simply do not like according to my own tastes. When their art is their livelihood, and they have put their hearts into the creative process, I don't think it's my place to stand in a role where I can do any sort of material harm to the public's perception of their art. That's my subjective opinion, anyway.