I have to agree with some of the comments here.
Being that Ayu is blonde and uses tons of English, I don't see it as her being too Western. She just admires that culture and likes to use it in her music. Blonde is a very good color on her and, I have to say, it's what makes her unique. English titles are also a relief for me being that I'm completely American, but isn't English almost like Japan's second language? It's quite common, so maybe it's just easier within the music world...
Like emiko said, it's like us listening to Japanese music and liking the Asian culture. It doesn't make us too "Easternized."
