Even if this is true (as unlikely as it seems) then big questions ought to be asked about the officials. If this story is true then their response time here was far too slow as many things could have occurred during the seconds between the 'goal' and the Otamendi shot going in. With goal line technology there is an instant reaction on the referees wrist and a goal is signalled as immediately as it can be if he was using his eyes. If there was such a delay here that the referee showed no indication of responding before the second shot went in then it was too slow and goal line technology would have been far superior.
For example, what happens if the ball going out towards Otamendi hits a hand of a defender, the referee sees it and is blowing for a penalty before the second shot goes in? Imagine the chaos here if he has to decide whether to give the original goal or the follow up shot or the penalty he has awarded in the seconds in between the other two events.
Goal line tech is as instant as it can get and does not depend on human beings reaction time or a conversation. All the officials know independently within milliseconds if the ball has gone in.
It has to be the better option in any major competition.