My bad for not being precise enough with my words earlier.
At this very moment, the facts are yet to fully surface. Instead of saying all the ‘the pilots should have done or should not have done’, let’s just explore possible contributing factors besides pilot error. Every aviation accident/incident I came across had some form of human error. Pilots, dispatcher, ATC, mechanics, etc. They flew the way that got themselves killed, no doubt that was an error. The investigation will eventually elaborate all the details.