The author, Evan Hahn, shares his observation that programmers generally dislike using the 'reduce' function compared to 'map' and 'filter.' He cites personal experiences from code reviews where 'reduce' often receives negative feedback for being hard to read. The post discusses possible reasons for this aversion, including readability issues and decreased familiarity with 'reduce.' He invites readers to share their experiences with 'reduce' in coding and code reviews.