Point taken.... buuut... is it so easy to wipe them from the board?
to go back to the hunting tapestries - one woman wearing the 'capped sleeve' kirtle is wearing something else underneath but with no sleeves showing. Could that be a sleeveless kirtle? or similar in this pic... (nicked from another topic
You might also argue that the sleeve is so neatly fitted to the upper arm (or at least depicted as such) that it may be uncomfortable/unfashionable to create extra bulk with short sleeves underneath.
Though equally to counter my own argument, the image from 1473 appears to show a long sleeved frontlacing kirtle being laid to one side exposing a pink short sleeved underneath - which in turn would suggest that the enigmatic short sleeves aren't nonexistent but rather often hidden under another garment.
I remain to be convinced either way, though as you say the status of the wardrobe owner will obviously impact upon one's sleeves