Exactly, and I hope they do, because you know it will then start becoming a slippery slope where they will start banning people's personal devices of other types because they aren't "safe" and instead insist that only their rentals are safe for their parks. Neither DH or I use one, so we wouldn't have standing to do so, but believe me if it is allowed to stand, we will ALL regret it in the long term.I thought about the Segway case as well, and agree 100%, they're going to have to show some sort of evidence related to safety in order to just outright ban them (should someone push the issue and sue, that is).
Segways can definitely be shown to be a problem, but in this case, these devices are only a problem when not used in compliance with manufacturer's instructions, again I can easily see them being allowed to remove people from the parks that are using them as wheelchairs (except the models like someone posted above that are designed to be used in such a manner of course), that would be what they even admit the safety issue is, but I can't see them being allowed to ban them completely just because there are some guests that break the rules. Again, this is if a lawsuit was filed, that is the way I would see it going. You can't punish everyone for other people's actions, even if it is a majority of the other people.