In reply to Allovesclimbin:
I'm generally of the same opinion about drones as you and most others on this thread. They can certainly be intrusive and unwelcome, especially in otherwise calm and peaceful environments.
In this case, however, it seems worth noting that the only person we know was in the vicinity (the person posting this thread) seems to have been quite happy with the drone's presence and is keen to see the results. It's entirely possible that the owner of the drone established this before flying it.
If he didn't, and just got lucky, then I think he was still being rude. In my opinion, the etiquette for drones in the wild should be that it's fine to use them if you can confidently establish that you won't be bothering any wildlife and that any people within earshot or camera view are happy with it.
In much the same way that outright bans on crags are generally less respected by climbers than thoughtful and limited restrictions, asking drone owners to use them courteously seems likely to get a better response than condemning any and all use.