I imagine Jessica cracks up at all the blind jokes Matt makes and gives them in turn, because it seems her style of irreverence. Luke might vacillate between 'well he knows what he's doing' vs 'oh god this dude knows NOTHING of what he's doing', and I can definitely see them not thinking things through properly, because of the old 'because you're not a Helpless Infant you don't have a disability and need no Real Accommodations For Real People With Real Disabilities' trap, if only unconsciously.