i never really lost faith in what she does. i might go off and on with her music, but i never really disliked anything so much i would say "OMG, she totally failed this time" there are songs i am not particulary interested in and would almost never listen but i always find something i like, and if not i just don't bother about it and forget it is there. Maybe it's just not for my taste. Just like i see a lot of love for Love songs, and i personally never cared for that album AT ALL. it would have had a different effect if i liked her vocals there, to me if vocals are no good for my ears then the music will do nothing to me
but i don't consider that a fail, just not what i am looking for plus she can't please everyone all the time. Tho as a fan i am very "open for options" and understanding if i know the background of the change that took place at that time. And honestly i never thought Ayu is an unique star in pop culture there is really nothing unique about her music but it works for me!