I think it also a concern of personal liberty. As Penn Jillette always says, "how can we solve this problem with more freedom, instead of less?" I can't imagine that a place like WDW, famed for it's photographic opportunities, would ever fully ban selfie sticks. It's absurd that the actions (not equipment, ACTIONS) of a few inconsiderate people should ruin the use of this perfectly legal accessory for so many. As for rides, it's banned on rides now. Done and done. But those who are really more upset that "vain people keep taking their own picture!!" won't be satisfied with that, and I'm not surprised. If someone causes a danger or inconvenience, deal with that person individually. Boy, talk about not wanting to deal with other people.
Speaking of which, not only is it inconvenient to wait around until you luck into some stranger who speaks english and wants to do you the favor of a photo- they NEVER take a good picture. "Yeah, nice blurry pic of my feet, thanks." The college kids they pass off at "photopass photographers" are not much better.
Too many people these days like to say, "Well I don't approve of it, so you can't have it either." Look at the example of the bike rider who was injured by a fellow rider- the person who caused the injury was rude, disrespectful and insulting to both the injured party and the police, but some people are mad at the STICK! SMH.