I think unfortunately, that has been proven several times, be it the "system" or the poor humans inability to sucessfully interface with it, often with loss of life, or in the Qantas case perhaps merely a loss of personal hygeine
IMHO it is a can of worms and everytime something else happens always we end up with the FBW defenders vs the luddites. We have done it to death so often here, purely my opinion, but no I don't trust it any more than I would a politician.