Nobody

That's not what Miyavi fans were saying in 2008 when that album was released. Everyone was sick to death of that musical style and wanted Miyavi to move on to something new. Said fans voted with their wallet. I even remember Miyavi saying something about how dismayed he was that the album didn't sell as much as he was hoping it would. He then listened, got rid of the Kavki Boiz and moved on to something new and now there's complaints that he should go back.
 
If there's one thing about Miyavi as an artist, it's that he taps into a style fully before he moves on. He's done with that style and he's never going back. Ever. That's what the camp of Miyavi fans that wanted more Miyavizm found out the hard way.
It's also very interesting to read this argument:
 
 
This argument was phrased very similarly when This Iz The Japanese Kabuki Rock was in vogue. The album is a few years too late. He's doing the same thing over and over. It's so unoriginal. Things before it are the best things he's ever done. In a few years when Miyavi is doing something else, which may or may not even include a guitar, people will look back fondly on this moment and say that they wish he went back to this style of music.
Hindsight is so 20/20 it hurts.