I love, love, love to do needle turn. At the moment I am mid way through a Hawaiian Quilt, all needleturn. As I designed it myself, it is more detailed than 'real' Hawaiian, so miles and miles of turned edges.
I don't think it is dying out as much as it was ever as popular as piecing. It always seems to me that I am the only one doing it when I am in a group.
My first quilt, in 1970, was needleturned applique. I did not know what I was doing, I thought I was inventing something new as the only quilts I had ever seen were pieced.