Accidents happen, how many cars have crashed into power poles where people have lost power do we now outlaw cars? Was he doing something stupid, or did he not see the power lines. How many of us have never had a mishap?
Most incidents with cars into power poles is not due to a "loss of power", it's usually drugs/alcohol, or a combination thereof, and yes, that is major STUPID/illegal/deadly.
As to the drone operator, yes, he did something stupid: he did not check his environment before he spooled up and launched.
Period.
And yes, every person does make errors here and there in life, some more than others (see above) and hopefully we learn from those errors.
But I have been around other drone/uav folks, and all seemed to take care and safety into first account. BUT, I have also been around a few owner/operators that should NEVER have one of these in their possession, you could just see "the incident coming down the road".......
When they show up, I land, quietly pack up, and leave the scene before it happens......