Sugarbasil didn't say Ayu was anti-sex or that sexuality was NEVER a part of her image at all. She said it was never a prominent feature, as in, she's not like Kuu where a large part of her career is based on sex.
I don't recall any past pictures of her that were "just as sexually suggestive" as this cover, not even those ViVi (or whatever magazine) pics where she was topless which were, at the very least, much classier. I don't claim to remember/have seen every picture of Ayu that was ever taken though, so if you'd like to link AHS to some super sexually suggestive pictures of Ayu, please do.