a new season means a new topic which will of course lead to strange ratings across various media outlets. Some more respectable than others. 
First rating is in
Racingsnews365:
Mazepin: 2
Spun repeatedly in qualifying, qualified last, crashed on corner 3.
There's always the thing that "even the worst of them is a professional racing driver and miles and miles better than the average road user", but I almost literally could not have done worse. I doubt I would have crashed by the third corner because I would be uber cautious on a GP debut.
OK, I wouldn't have qualified within 107%. But that at least would have meant an undamaged car.
Anything more than 0 for Mazepin makes a nonsense of the idea that 5 would be average. It was probably the worst F1 WC GP debut in the history of the championship. There are only two possible worse candidates and they at least both outqualified some others.