Yes -
I agree - when I think of "quilt" I envision lots of handwork and decorative stitches. It would be great if everyone appreciated the fine differences between a hand made quilt and a mass produces comforter... and we do not wish our masterpieces be call "comforters". Mater of fact both probably could be called "blankets" if you stretched it a bit.
HOWEVER -
here are the actual definitions
quilt
1. A coverlet or blanket made of two layers of fabric with a layer of cotton, wool, feathers, or down in between, all stitched firmly together, usually in a decorative crisscross design.
com·fort·er
3. A quilted bedcover.