Of course not, but crashing happens in this sport. I have had carbon bars fail at deep scratches. It happens.Performance asessments of equipment that is not tuned or properly cared for are hardly liabilities for those products in any genuine way.
If you can somehow manage to not ever crash or scratch bars, then more power to you, but I have never seen anyone who has been able to accomplish this. It's pretty much an inevitability.
So while the CF bars may indeed be lighter and have better damping properties (there is really no argument in either case), they will usually fail sooner and more catastrophically than their aluminum counterparts under the same conditions. It's the nature of the beast.
Given the fact that most people can't even tune their own drive train or own a torque wrench, it's also a pretty good bet that they have at some point, overtorqued their brake levers and shifters (and then cried warranty .) I have worked as a mechanic for a long time (past tense) and the amount of badly setup, over tightened, rusted, no grease squeaky bikes I have seen is unbelievable.