I'm quite sure that the reason the pamphlets are going only to users of mobility devices is that WDW is trying to strike a balance between reducing injuries &/or altercations and spending an absolute fortune on pamphlets and also keeping the trash factor as low as possible, because no matter how you parse the issue, there are exponentially more pedestrians than wheeled vehicles of any kind in the parks. Did this decision offend some people? Yes, absolutely, but the question is, did it also perhaps prevent at least one child from being run down and seriously injured by an inexperienced rental
ECV driver? Is that worth taking the chance of offending disabled persons, from WDW's POV?
I'll offer a couple of thoughts here. One, I think that it is time that the Orlando theme parks (if not the state of Florida) require ALL rental ECV's to be prominantly marked in some way that denotes that the driver is inexperienced -- sort of like those bumper stickers that are required on cars being driven by student drivers. That would let CM's and Security know what they are dealing with any time that an incident happened. It might also serve as notice to pedestrians that the person controlling the vehicle might not know what he or she is doing, and to give it a wide berth. In the case of the pamphlets, it would let CM's discriminate and pass pamphlets out only to rental drivers rather than those who own their own machines.(That is, presuming that people who own personal ECV's *never* drive them recklessly, and I'm not sure that I'm willing to accept that as fact. I think it is a given that no matter what kind of vehicle you are talking about, there is always going to be a certain percentage of experienced drivers who will choose to try to hotrod the thing in some fashion.)
Second, Disney has a huge problem here, and so do all theme parks; it is only that WDW is probably the worst example because it tends to draw more elderly guests than other theme parks. This is the problem: the presence of large numbers of wheeled conveyances in the pedestrian areas of the parks SHOULD, for crowd management safety reasons, translate into reduced crowd capacity. They really should be compensating for it by counting every large 4 wheel ECV as 3 guests, every 3-wheel ECV as two guests, and every stroller as 2 guests (3 for a double.), etc. Doing so would reduce crowding and help to keep the parks safer, but I'd be willing to bet that no theme park in the US actually counts the gate that way; I'm guessing that they keep admitting the actual number of warm bodies that the designers and the fire marshall say that the parks can hold.)
Is it unfair that WDW is not also cautioning pedestrians? Sure it is, but life cannot always be perfectly fair. Irritating though it may be, it has historically been the case that when people of two vastly different sizes are attempting to maneuver around one another in a small space, the societal norm is to place the responsibility of greater caution on the larger of the two parties, because the larger person has more potential to seriously injure the smaller one. If you increase your size and weight by sitting on a 280 lb machine, then you are the larger party, and the burden of care falls on you. Stinks, but there it is.
PS: FWIW, I have experienced the WDW parks in a wheelchair. About five years ago I slashed my leg badly in a fall on the first day of a trip, so I spent the next week in a chair until I got the stitches out and was put into a walking splint.