Apparently the mainstream media are still discovering that romance readers like e-books. This news presumably remains surprising to them because:
1) The journalists think romance readers are stupid trogs and are astounded they can find the 'on' button of a Kindle, or
2) The journalists like to talk about how ashamed romance readers are of reading romance, or
3) Someone Random House sent them a PR package about Rouge Romance and they decided to post it instead of actually researching and writing something original or insightful.