This is more of a sign how bad a magazine "Der Spiegel" has become. They just cannot imagine that such an accident and the loss of colleagues you possibly personally know can make you unfit to fly.
I have written to "Der Spiegel" and asked them to substantiate their claim or to drop this wild speculation.
This was probably me misinterpreting the news: It seems the crews were debating whether
they were fit to fly, not the aircraft. Lost in translation. My bad.