Busher are you seriously worried that the 737max crashes are a threat to Boeing's survival? I am surprised if you are. In my opinion the 737max is a short term problem somewhat more costly than the 787 fires but in no way an existential threat.
I think the danger Boeing faces is the potential loss of its engineering culture over the long term if the management changes that are being reported, (reports derided as hit pieces here,) are somewhat accurate. The danger of that is not just that somebody says it is so but that it is so. I guess my point is that if people are worried about some kind of anti Boeing plot destroying the company I frankly think they are completely off base and fundamentally not serious.
Remember that of the Fortune 500 companies that were on the list in 1955 only 60 are still on it today. Large complex industrial companies are very capable of shooting themselves in the foot and reloading, just look at GM, GE, Bethlehem Steel.
If you look at the upwards march of Boeing's earnings over last ten years you can take that at face value as meaning that Boeing is a really well run company that is able to wring efficiency's out of complex manufacturing systems and grow sales or you could wonder where exactly is the fat being trimmed and suspect that they are moving to the wrong side of the engineering/cost cutting line and are setting themselves up to fall behind. I suppose you could believe both at the same time as well.
I think airplane building is a pretty amazing business. So much capital so much need to keep advancing the technology, such high stakes with sales, and potentially such a huge growth in the market coming.
Anyway this is no De Havilland Comet end of the British Empire moment.