I think Rose's Turn was the wrong choice of material. This is only Season 1 and they are presenting one of musical theater's iconic songs. Where are they going to go?
Additionally, while the character of Kurt may have had this song on his mind, it doesn't really fit in. The song is about a person who has travelled many miles and then realizes she's been travelling in the wrong direction. Kurt is too young to understand that.
A much more appropriate song for this scene would have been "Who Will Love Me As I Am?" from Side Show.
If anyone ever tells you that you put too much Parmesan cheese on your pasta, stop talking to them. You don't need that kind of negativity in your life.