Of course there is a chicken and egg situation about the visibility of an author's book being partly dependent on reviews and likes and retweets. But the reader is not responsible for any book's visibility, unless they choose to contribute to that. Books have always been partly dependent on word of mouth. Readers can still talk to their friends and recommend your book without them formally committing 200 words to a review, or liking on Facebook.
Authors, if you agree with me, please join in debate via the comments. Readers, I would love you to participate in any debate too, but I make no demands of you to do so!