Is It 'How" They Write The Code? Or Is It 'Who' And Where And What Are They Paid?
You have your code subcontractors and then you have the Boeing approach. It is not, of course, an issue confined to Boeing. Then again, lots and lots of code subs living in almost subhuman conditions in India making three quid an hour (but being billed out by job shops to their clients at vastly higher rates) aren't all working on aircraft and spacecraft.
Now tell that to 737 MAX passengers who went down. Oh, that's right, you can't, can you?
Behind those prime contractors used by the glossy names of global business that don't want to employ developers themselves anymore are young people paid just above dirt for their work hidden beyond the view of the brass at companies that think they are getting a deal - until things start falling out of the sky.