I think you are unfairly characterising the article when you say “I was hoping for more insightful feminist analysis from The F Word than the trite ‘people like sex, sex is good, nudity
is sexy, therefore Suicide Girls is sexy goodness.'” The article stated that it would look at some possible negative and positive aspects of “alternative porn”, and that is what it did in a considered, detailed way. It was certainly not 100% positive about these websites, as you seem to suggest. To stereotype the piece as a simplistic “yay, all pornography is great!” piece is very unfair.
We also included links to the anti Suicide Girls sites so people can read about it from that perspective too.
With regards to the last point, if you interpret the statement as “depictions of sexual activity will always exist” then I think that might be more of what the author was meaning. Whether making these depictions “better” for women and less exploitative can be achieved through alternative porn, or not, is the issue that the article was trying to address.