A recall for essential maintenance is just that. I would focus on the need for an urgent update due to the flaws rather than the issuing agency's lack of more accurate terminology for a relatively new element to cars. Rolling around in semantic mud on the term recall is not sensible, as the definition in regards to cars is fairly specific [0]. Basically a recall just means there is a safety defect that must be addressed by the manufacturer. In Tesla's case, yes, they can push out an update, but the delivery mechanism of the means of addressing the defect should not be the focus.
0 - https://www.progressive.com/lifelanes/on-the-road/understand...