Why Bearman does not deserve a permanent spot in Formula 1 at this stage

Of course, it was a top performance by Oliver Bearman. He had never driven a Grand Prix before (let alone completed laps in that particular F1 car). He wasn't able to prepare himself, and on top of that, he joined a top team in Ferrari. Seventh place in the Saudi Arabian Grand Prix is a more than fine performance. Still, it is going too far to say that Bearman deserves a permanent spot in Formula 1 after his debut race.