This is a slur, so honestly please stop using it, full stop.
This mindset is based in ableism that disability is a prison. We're tired of seeing people in fiction that are trapped and suffering and unable to live because of their disability or illness. When was the last time you saw a hero who had a disability and still kicked ass??? I can only think of Taimi from GW2 and... yeah, that's it. Just Taimi.
I have fibromyalgia and POTS. I am in constant pain, often in joints most people don't know can be in pain, like shins and collarbones. Getting out of bed hurts. I am exhausted at all times.
I have 3 lucrative and well-paying jobs, make a comic, have a beautiful partner and a cat, make fursuits, am a published author, and a human rights activist in my spare time. I am a human with interests, hobbies, and a great life. I am also in constant pain and disabled. These things do not cancel out. Pain management exists. Acupuncture, massages, pain medication, blood pressure management, working from home, ergonomic office chairs - these are accessible solutions that help me manage my life and my pain and my chronic conditions. "Normal life" is available for disabled people.
We're tired of stories about miserable potato people in hospital beds lamenting about how their "body is a prison" (which, by the way, that phrase originated in the 1800s as a way of promoting actual eugenics). More stories about disabled people who cope and live fine, please.
And please no demonizing health workers. They're not all great, but media that makes them look shitty just makes real disabled people afraid to seek health or take advantage of inpatient programs. Media impacts reality more than you think.
But at the end of the day... James Cameron's Avatar already did this. A lot of things already did this. Why would you add a disabled character and make disabled readers excited to see themselves, only to quickly retcon and say "lol actually I won't write this", and erase that part of the character? You wouldn't write a character who starts the story off Middle Eastern, and then ten pages in say "they're reborn now and can experience the freedom of being American".