Re: The first thing that sprang to my mind was
[Edited] Kind of Turkish Flight 1951? Instrument failure caused autothrottle issues, although FBW would still have allowed for "manual" (used loosely) override. I guess it's more of an FMS failure than FBW failure. I actually agree with your point and think this tweet sums it up nicely: https://twitter.com/cat_beltane/status/588359354136403969
For those unwilling to go to Twitter:
"so what did you do before self-driving cars?"
"we just drove 'em ourselves!"
"wow, no one died that way?"
"oh no, millions of people died"