Boing is a people! People make the company!
This is purely an organizational management issue. How the door blew out is an engineering issue, and that will be figured out. WHY is the key! Why did Boeing come to this point? I mean the rudder issues with MAX, asking for safety exceptions for MAX7. The NASA Challenger disaster is still THE MOST important case study of how organizational management can kill people. It is so well documented that it is best case study to not repeat mistakes. Yet, here we are.
And, FAA is keeping them grounded regardless of finished inspections:
"The FAA’s first priority is keeping the flying public safe. We have grounded the affected airplanes, and they will remain grounded until the FAA is satisfied that they are safe"