Funny thing, Jan, I was thinking the same thing about QE's furnace filter. And you know it's been a dry summer so lots of dust in the air that filters into the house--no you got to be kidding!!!!
Quilts were quilted by machine when the first sewing machines came on the market too. Nothing fancy, lots of straight line quilting. Could be alot of antique non quilts out there too.(sic)
I will admit sometimes I think there is too much quilting. Since quilting is not as important to keep batting in place as it once was (early battings were just loose and not held together very well) I feel the quilting should complement the block/quilt, not overwhelm either. IMHO.