Did you even bother to read the linked article?
Neither of us know for sure why Apple did what they did.
"I think what Apple was getting squeamish about wasn’t the sexy apps themselves, but the cheesiness that the sexy apps (and their prominence in best selling lists) was bestowing upon the general feel and vibe of the App Store. One thing I wasn’t aware of before the recent crackdown was the degree to which these apps were seeping into various non-entertainment categories. E.g., like half the “new” apps in the “productivity” category featured imagery of large-breasted bikini-clad women."