A little bit less so though, as planes fall quite easily (and quite quickly) from what would be relatively minor disturbances at those other locations.

It's kind of like saying walking on a wood-bottomed rope bridge is the same as walking on a suspension bridge. Except the rope bridge is a couple miles in the air. Essentially perfectly safe, but if one person cuts the ropes, you all go down. If someone decides to take out a chunk of a road's bridge, there's more danger to the people nearby than to the bridge as a whole; it's much closer to the same risk you run by simply standing near someone else.

Then, there's always those pesky squirrels deciding the rope looks tasty (ie, geese + engine). That's a different problem entirely, though.