I’ll echo the words of my friend, who is a permanent wheelchair user:

“Yes, I identify with my disability as part of who I am, but I would still take a cure without hesitation”

Yes, people with disabilities identify with their disability, so even in a fantasy setting I can see how their disability would be part of their character.

But every disabled person I know would figuratively leap at the opportunity to reverse their disability with magic. It is also basically impossible to use a wheelchair while holding something like a wand or a staff or a fireball in one hand, so if there’s enough magic around to push a wheelchair, there’s probably enough to make your legs work. That’s why somebody has a good reason not to expect a wheelchair in a fantasy world. I can see how somebody who doesn’t really know any disabled people would panic at the idea of a wheelchair being part of the narrative or something like that, and I can sympathize with it.