The one does not have to exclude the other. People that are working for medicine to move on and improve are NOT the enemy that needs to be stopped to change "gods perfect world" where we just have to accept that some people have to suffer and others not.
The notion that we can't actually change or improve in the future, and just have to accept the world as it is and be grateful for it, is a more than reactionary one. And one that is usually detriment to what is depicted in Star Trek.
Agreed, folks accept that race relations have improved in the future, however the idea that there is a possibility there might be treatments on offer for people who want them but cannot get them now in the 21st century and folks are clutching their social pearls. Whoever the disabled actor is, a line about 'I never did the operation for X cos I did not see the need for it' and be accepted as no big deal.
The other problem with 'cures' in speculative fiction is that they are not available in reality. They reduce the experience of lifelong disability to that of having a passing illness, and make disabled people even more invisible. In TV land, if you break your back, odds are you will miraculously walk again by season's end. Imagine what that is like to someone to whom their wheelchair is with them for life.
If the story is based on a scifi futuristic show then why would it be an issue? In
Star Trek people like myself are treated as political, cultural and social equal human beings, in fact humanity are one of the top dogs, if not The top dog. IRL people like myself cannot catch a cab when the sun goes down, does this mean the
Star Trek franchise should reflect the present reality of human race relations? No one expects them to.
Anyway starships have turbolifts it should be easier to get around on Federation Earth then it is today, whether physically immobile or not.
IRL technology has surpassed Star Trek, so the franchise needs to stop presenting itself as a futuristic present day Earth when the present day is more advanced in some medical matters.
Deafness and autism aren’t diseases.
Losing a leg is not a disease either, but some people use prosthetics, that is their choice. If, a big if, in the future, medical advances stated they had a cure for deafness (I believe it exists already to some degree) or for autism. If people choose to take it, then they should be free to do so and not made to feel less so than for doing so.
The future isn’t perfect because we’ve purged humanity of physical defects, it’s perfect because we celebrate each other’s differences and delight in the wide diversity of life and cultures throughout the galaxy. Prejudice and bigotry are gone, as are hunger and suffering while humanity looks down on our era as a dark age for the species.
I like the attitude that GR allegedly said when questioned if baldness is not cured in the future. In the future 'no one will care whether a man is bald or not.' I would have added no one will care if a man or woman is bald, chooses to wear a toupee/wig or has their scalp injected with hair growth hormones.