I would like to see more about the book in some reviews here though I've only read a few about this book but I can liken my view and likely the view of at least some others to how they view professional sports. It's like after you get a taste of something really good, anything less just pales in comparison.
I could make a number of different analogies and comparisons. One way to illustrate it is a relationship. If one was in a relationship with someone and this person was just spectacular--virtually perfect. However, what if this person wasn't who they appeared to be. Let's say, to the extreme (I thought of using an example of someone being a fake but thought of something more extreme), everything about them appeared normal, yet they were actually partly artificial--part human, part machine--yet looked like any other person, in the most basic ways, but were anything but basic as they were just everything one would want in a signiciant other.
I had trouble drawing a close parallel in a matter of minutes, but even if that person knew their significant other was partly artificial, it doesn't take away the fact of their personality, their charisma, talents, or looks, but it does likely change one's previous perceptions. Knowing that what you see in that signicant other is an illusion does take away the allure and even if that person may decide to stay with this half person, half machine person, things would never be the same again. Yet on the other hand, anyone other than this person would be less in all ways except for "realness" of course.
This is an extreme example and doesn't tell the other side of the story--the business side of the story and human nature to compete, survive and in the case of competetive people, thrive, but it does partly explain why some of the fans may still watch and in some cases may not stick around. And then there of course are those that refuse to believe there is anything artificial and other shades of grey in between.