I personally think it's an over-reaction to the over-reaction to 9/11.

We were presented with, "Terrorism is unbelievably dangerous! The slightest provocation can take down an airliner. We're all gonna die unless we take extreme measures!"

A lot of people pushed back so hard the other way that they got to, "Air travel is totally safe no matter what and there is never any danger from anything."

For someone without much domain knowledge, "We need to keep drones away from airports so an airliner doesn't get brought down in a collision" probably sounds about the same as "We need to ban all liquids in containers larger than 3.3oz, unless it's contact lens solution in which case it's totally cool."