Many art quilts are machine quilted, however it's important to remember that there are also many art quilts that are hand quilted. The type of quilting that is done on any quilt is there for a reason, usually only known to the maker. Neither hand quilting nor machine quilting is wrong. Some people prefer one method over the other.
My only concern is that hand quilting is becoming more and more of a rarity, and when we can, we need to be as proactive as possible and show quilters how to hand quilt.
I'm in mid-Michigan. If anyone wants a hand quilting mentor, I am available and willing to help!