The wrong bit of 48.12 is being discussed. It is not any/all that matters but the black and white timing.
The regulation is explicit about when the race can be restarted.
It states: “Unless the clerk of the course considers the presence of the safety car is still necessary, once the last lapped car has passed the leader the safety car will return to the pits at the end of the following lap.
The lapped cars unlapped themselves on lap 57 so the safety car should not have come in until lap 58, which was the end of the race
That is 100% clear and shows how fucked up the whole thing was