Cruise missiles aren’t going to be used against targets that might move, they will be used against ones that don’t move. Whilst it’s true that their aircraft could operate from roads, they’ll only be forced to do so if we attack all of their runways which I doubt we would considering they only have 10 to 20 working combat planes anyway. More important targets would be things like their fixed radar installations, command facilities, munitions and parts storage, and perhaps ports and ships in dock. Argentina’s A4s are not a concern, they’re museum pieces and will be massacred by modern aircraft.