Whoever wrote this must not be very good at what they do (assuming they agree with the opinion). Programming was an enormous amount of fun for me, I would have never gotten good at it if it weren't. In fact, everything I ever got good at was tremendous fun. Sometimes it was work and pure misery, but for the most part it was fun. Perhaps others tick differently from me, but based on conversations I had with people that are very good at what they do, I doubt it.