It was not my intention to offend you. I apologize.
Actually it was not an aesthetic evaluation. Just that they cannot contribute to taming frequencies below 200hz and will only server to overdampen the room.
It is essential when using devices in a room to 'first do no harm'. It can be harmful to the mid/high frequencies that get absorbed while taming the lower frequencies.
Professional devices use reflection technology (plastic film) to not absorb above say 400hz. Normal room furnishings will suffice, or can even be too much above that range.
Try some plactic film or aluminum foil over the pillows and see if you do not notice a difference: especially since they are approx to ear level. There is much hi-frequency reflecting as well that goes on in the corners.