That's just ridiculous, sounds to me like just another jealous report out to try and bring down ayu.
That letter that max sent to her, that's nothing, if not stupid. I mean, he was the one who found her, who encouraged and even hounded her to start her singing career in the first place (she originally hated singing, and wanted to act)
And let's face it, if you go on the oricon numbers, and a report i saw somewhere, about her income tax lodgement (i think that might have been from time asia) this woman has bought avex around 1.5 billion yen. So, no offense, but this woman really has been supporting avex 
 
But, that's really beside the point, does it really matter if she's sliding? She's in a business where popularity changes overnight. If the "Pop Charts" no longer like her, the millions, or more fans that her and her music has touched will still love what she's produced.
Draco