I think art quilt artists and traditional quilters can argue this until the cows come home. To me it's a quilt if it has the 3 layers, whatever those layers may be.
I once took a class from a woman that kept her quilts in a locked safe. The teacher was Judy Cloninger and her quilt Shiraz was picked as one of the top 100 quilts ever made. I guess I couldn't blame her. The intricacy of the design and meticulous way it was put together would possibly make me want to let no one get their grubby paws on it-cause you know there are some quilters that can not restrain themselves.
This is my cat quilt that won a blue ribbon in the Kentucky State Fair and was accepted in Paducah. I like to rotate my quilts so they don't get permanent creases in them from being folded.