Most people seem to be identifying the roles that Ayu played with Ayu herself (which really isn't the case, a good actor should be able to play most roles presented to them). It's not really applicable because I don't think she went to her agent and demanded that he find her a role where she could rub vibrators across boy's faces while teasing them.
I just found the article interesting since she was willing to go through and play those roles, in a way, showing early signs of her devotion to her work. She had plans to be the best at whatever she was and her apparent willingness to go through with these less-than-flattering roles is indicative of that statement. Well, to me it is, interpret it how you like.
If I could find a less biased/sensational translated Japabese newspaper then I'd read that instead. But that's the way media swings unfortunately.
(edited for clarity, I tend to suck at that)