One time I made a very negative comment on Reddit about a fantasy book, and the author actually responded to me. When that happened I felt incredibly bad, because I didn't expect the author to actually read what I'd written. But that experience taught me that you can just reach out to people that make stuff you like. You can make people feel good about something that made you feel good, and it's entirely free. Since then I've reached out to various authors just to tell them I really enjoyed their books.
One of the best things about reading indie authors and smaller creators in general is the ease with which you can communicate with them. I remember making a comment about a minor detail to an indie author about one of his series, and in the next book he actually incorporated my suggestion.
I think once you reach a certain scale or popularity there has to be some kind of filter or process between a creator and their comments.