The 737 Max crashes were also so frequently explained by online commenters as because of “outsourced software engineers” and so on.
But the FAA/NTSB always comes through with fact finding despite the immense political pressure to find these facile explanations. Organizationally, someone once designed these things well, and subsequently it has been preserved so well.
When I see so many American institutions turned to partisan causes through an escalation of “well, they’re doing it” it’s pretty wild that this org remains trustworthy. Wild.
The history of how that came to be is worth a read and answers your question better than I could.
https://en.wikipedia.org/wiki/National_Transportation_Safety...
One thing that stood out to me was just how long ago that separation was achieved and subsequently ensured.