[fill in the nationality] should not fly, as simple as that.
Does that stand for the Canadian A320 trying to land on 4 aircraft on a taxiway as well?
Or the US flight crew that drove a B767 into the water off Houston spoiling the delivery time of Amazon Prime?
How about... AF447?
How about... the Rostov on Don B738?
How about... worlds wonders doing a downwards G/A in an A320 that accelerated all the way down to 50AGL?
How about a B737CL that taxies with a bit of swagger after a 4g landing in scrumpy country?
How about a B777 forgetting to climb on a departure,
How about a B777 retracting the gear on a G/A and settling onto the ground?
American Airlines flight 2341?
American Airlines flight 300?
American Airlines flight 567?
American Airlines flight 1586?
American Airlines flight 331?
etc,
should we start on Delta, United, Lufthansa, Air France, Birdseed?
One really needs to look at accidents per million flights instead of assuming that an airline with three times as many flights having twice as many accident has a worse record. Of course, there are other variables as well including the era of the accident rate.
Regardless of the cause of the most recent accident, I’m afraid the KAL record from the not that distant past is not the best. Getting shot down twice due to navigation errors a little further in the past doesn’t look good either. Like most airlines, it seems that the last 15 years have been fairly good.