Well, it feels like Ayu comes into contact with more English-speaking people and she's often in NY/LA or Europe
And Ayu studied a bit in NY in her early days~
Since she write her own lyrics, so she need to have a better understanding of what English words to use while Namie's Engrish is written by someone else
But recently, it feels like Namie's Engrish has really improved!

Well, just not that "no supplies" part