Listen, I am fucking loath to trust a Netflix documentary, but something has definitely happened to Boeing over the years.
The very same shit that had us all saying shit like “Airbus? More like Scarebus! If it ain’t Boeing, I ain’t going” is literally all the shit Boeing gets up to these days, if the 737 MAX shit is any indication
What happened to Boeing is very easy - when it merged with McDonnell Douglas, the entire McD management was immediately transferred to rule over the "new" Boeing. A lot of experts basically said the merger was more like McDonnell Douglas buying Boeing with Boeing's money.
And what had McDonnell Douglas been doing for decades at that point? Simple - putting out aircraft with catastrophic design flaws baked into them due to greed (DC-10 with the cargo door, the entire DC-9/MD-80 family with the horizontal stabilizer jackscrew, and the MD-11 with its dangerous landing characteristics). So their taking over Boeing meant that those same flaws would manifest themselves sooner or later. And sadly, they did.