most hackers are already anarchistic and or libertarians so it isn't surprising that we think Ayn Rand is bullshit. We're already individualistic and questioning of the status quo. But for people whom aren't like this Ayn Rand can be an important author to read. For example women tend to be more caring and communal instead of selfish and rational. It doesn't surprise me that successful business women really like Atlas Shrugged. They need to hear a justification for the pursuit of selfish aims moreso than a libertarian does.
The things that hit close to home but are slightly off bother people a lot more than things from left field. evangelical christians touting their creationist museum bothers me more than muslims beating women, even though the latter is worse. The evangelicals are in my backyard. Likewise libertarians are bothered by Rand because she espouses some of our ideals but horribly twists others.