I understand the desire to have wheelchair bound guests represented. "Same-sex couples are represented, so why not disabled / wheelchair bound guests" is a valid argument. That said, it is impossible to represent ALL of the different types of guests one would find in a theme park... If the Devs start trying to represent / please everyone, they will no doubt open a Pandora's Box of requests and complaints... What about Guests with Service Animals, Transgender Guests, Stroller bound Guests (Infants), Little People, Elderly Guests with walkers and canes, Guests of different faiths that wear certain types of clothing for religious/cultural reasons?
I used to work in a large theme park, and I saw all of the types of guests mentioned above on a daily, weekly or monthly basis.
All that said, yes Wheelchairs and Strollers are a BIG part of theme park reality, but so is Staff & Financial Management, varied Scenery & Ride choices, Restaurants and Eating Areas, Stage Shows, Parades & Special Events, Fireworks, Hotels & Lodging, Parking & Transportaion, WEATHER, etc.... I think these things should be consuming all of the Devs time at the moment.