Star Trek is fiction written for people in the present and meant to be seen through a modern lens, it is not a depiction of the actual future. People use wheelchairs today, so they have fictional future people use fictional future wheelchairs in the fictional future.
This isn’t hard people.
Sorry, but no, I don't think so. As I said upthread, if you want to use a sci-fi setting to its fullest (e.g., the "literature of ideas") you need to do one of two things:
1. Deal with imaginative technologies, concepts, and settings and see what the ramifications are,
2, Use a setting which isn't the mundane present to tell an allegorical story.
I do agree that in general fiction cannot be viewed as anything other than "of its time" and regardless of intent science fiction will seem antiquated in some measures just due to the faulty projections that are made about the future. Trek has many examples of this - most notably that computer technology has generally been shown as less advanced than what is possible even today. Even Berman-era Trek basically didn't have anything resembling the internet shown on any of the shows, even though it was fairly well established by later period. Then again, a lot of "pros" effed this up too.
Regardless, this isn't the case of making a bad call about a future tech. This is a case of basically ignoring a tech which exists right now, which could be much sloppier. I will reserve judgement because we don't know how it will be depicted onscreen, but at minimum I would hope there would be some on-screen reference to use of wheelchairs being far more limited in the 23rd century than today.
But there is of course the other point - the one of allegory. This is why you didn't need 23rd century wheelchairs to tell a story about disabled people. Because a sci-fi setting allows you to expand the concept of disabled considerably.
Here's a hypothetical Discovery episode. The Federation makes contact with a race of beings who have augmented their neural functions with circuitry for generations - similar to the Borg, but to a more limited extent. Everyone is outfitted with a brain-computer interface in childhood. Information is "downloaded" directly into the brain as needed, with written language even falling out of favor. Physical or verbal interfaces have become a thing of the past, because people can just think computer commands. Most people that is. A small minority of the population has an overactive immune system which rejects the neural interface. They must do everything the old fashioned way. They have to learn things through the laborious process of study. They need to have special interfaces installed in order to get anything done. They might not be openly stigmatized, but they have their otherness constantly thrown in their face, having to work their way through a culture not designed for them.
See, I just put together the framework for an allegorical story about disability. Even better, the potential protagonist (er, guest star, I suppose) is someone we wouldn't see as disabled in our own culture. Hence it gets across the idea of what it means to be "disabled" to someone of normal ability. This is the core of what can make a science fiction story unique - what can only be done in a SFnal setting. And it's why just having a "future wheelchair" just seems monumentally cheap to me.