No, buddy, no!
Not necessarily "all" the personnel involved, more all the personnel "involved" if you make the distinction.
The ultimate line of defence agains this sort of f***up is the walkaround. Regardless of what atrocities - and I use that word deliberately - were committed in engineering and control practices in the hangar beforehand the ultimate responsibility for the safe departure of any aircraft, balloon, microlight, helo orthe space shuttle itself is a thorough and punctilious walkaround.
Compounding the self evident shocking lapses in engineering controls that allowed this unbelievable occurrence to be set up in the first place is the clear, blatant and utterly unforgivable failure to carry out a competent walkaround. There can be no excuse for this whatsoever, absolutely none.
Someone (or two, or five) need/s to do the decent thing and fall on their sword/s. Or perhaps, under the circumstances, people need to be put to the sword which given the absence of honourable or Professional behaviour alluded to above is clearly necessary now.
Most unimpressed.