I've seen this as the new "fad" for hand quilting. Personally, I haven't had any issues with the way my great-grandmother taught me - if it's all for the sake of moving body parts preservation - might as well give that one up. We've moved our body parts since birth - they will all have issues as the body ages. Hand quilting has been the same for so very long, using a new tool under the quilt is just another challenge in making a simple quilting technique, complicated.