From what I have read about this sorry tale of loss of life I am just amazed that the FAA appeared to hand over the final safety checking over to Boeing on a plate, that is never going to end well with the right decisions over passenger safety and that is a very worrying thing.
I see it as a failing of the FAA as Boeing were only doing what any other business would given the opportunity I imagine.
The Trump administration cut funding to the FAA so it cut its costs by delegating final approval. This "helped" businesses by cutting bureaucracy.... Yes, right.