So as @tcope is suggesting, a justifiable reason to ban drones at NPS is due to the annoyance factor.
Well, how about this... Let's ban children under 10 from flying on airplanes and visiting national parks too - because, quite frankly, they annoy me. And if we're all about making the world less annoying, heck, let's ban it all.
Makes sense... as long as you completely ignore the purpose of the NPS, what they were created do and the entire intent of the rule. Then, yes... that makes sense.
As with everything above, you are comparing things that don't have any relationship.Finally, what to do about that large, loud, single-engine plane that is dragging a football field-sized banner advertising Geico Insurance that's constantly flying around where I happen to be? Can we ban that too? I would just love some quiet, natural setting without that loud plane shoving advertising in my face while I'm relaxing at the park.
How about this... next time you and your family spend thousands of dollars to go some place relaxing... I show up up and a box of firecrackers and light them off right next to you. After all, who am I harming? I mean, if planes are allowed to fly around beaches why should I not be allows to ruin your vacation enjoyment? If people are not allowed to use phones on planes why should I not be allowed to unload a box of cherry bombs next to you while enjoying the day next to the pool? It's all the same incorrect fear... right?
I'm a HUGE proponut of not over regulating dones and their use. I think the media (and the FAA) spreads incorrect information to people in order to push their own agendas. I'd even go so far as to say that flying a drone in a NSP, miles away from anyone is not an issue. However, flying a drone right next to hundreds of people attempting to enjoy a national landmark.... no reason not to enforce that ban. There a _millions_ of other places to fly that are much more appropriate.