It’s really not a new technique, I was taught to back baste appliqué almost 20 years ago. I do find it easier than regular needle turn appliqué, I have a friend who hates doing it that way though. Me, I hated needle turn.
always nice to sign up and try out ( new to you) techniques so you can find something that makes sense to you maybe shows you ways to do things in a different way that increases your enjoyment