The door blowout thing is a massive QA issue, but it is a QA issue. It was overlooked and they definitely have a very crappy QA pipeline but these lapses happen. Especially when management is cutting corners. Please note that I'm not defending Boeing about this, I'm just saying that it doesn't seem "malicious", just incompetent. This kind of thing happens any many companies (this is pretty standard now that the world value MBAs over engineers, scientists, labor, etc).
But what's surprising to me that this kind of thing didn't happen with the MCAS fiasco. THAT was malicious negligence. They designed (poorly) a flawed system with way too much automated control to overcome having to actually have to do real engineering work on a new plane. They assumed that is worked fine with likely the same or worse QA pipeline that missed the door plug issue. But the WORST part is that they intentionally hid it from pilots, FAA, etc (it wasn't even in the manual). It caused hundreds of deaths. They at first tried to blame it on "pilot error." Which worked well for them since... to be blunt... the color of their skin and an American bias that the darker your skin is, the more incompetent you are.
Turns out that, no.... Boeing cut every cornet they possible could in pursuit of profits and tried to patch it in software resulting in the deaths of 346 people. And yet, somehow they walked away basically scot-free. The entire strategy behind MCAS was criminally negligent manslaughter at best. At worst, I dunno second degree mass murder?
And before the door plug event, Beoing was very close to being granted safety excemptions for the MAX 7 and MAX 10. Are you fucking kidding me?
On a personal note, I find this interesting for a number of reasons. The first is that I see this kind of thing happening at so many companies (and destroying whatever reputation they may have had - I call it the "Curse of the MBA") And secondly, I was supposed to be on a MAX 8 on the thursday, but they grounded all of them the tuesday I before I was supposed to fly.