If it’s to be dismissed, might as as well do it for the right reasons. Additionally, if somebody doesn’t have sunflower oil on hand (like me), then understanding what can stand in might save a trip to the grocery store and having yet another singly-used item in the cupboards.
Well, the only reason ever really to use olive is for its flavour; otherwise something else (e.g. sunflower, rapeseed/vegetable) is at least as appropriate and significantly cheaper.