Something that can happen in therapy for disabled kids is:
People hold out hope that the kid won’t be disabled anymore, when they grow up.
So they push the kid as hard as possible in childhood, and tell them (often without saying this explicitly) that if they just work hard, their body won’t be wrong anymore.
This doesn’t work.
People who are disabled as children are usually still disabled as adults. Even if the therapy helped them. Even if they gained new physical abilities. Even if they learned things from it they wouldn’t have learned without it.
Even if they learn to walk. Even if they learn to talk. No matter what other skills they acquire. Their body is probably going to stay very different from most other people’s bodies, and far from the cultural norm.
And… part of living well as a person with a disability is accepting the body and the brain that you have, and working with it rather than against it.
Because you can’t live in an imaginary body; you can’t live in an abstraction. You have to live your own life, as you actually are. And sometimes that involves medical treatment, sometimes it involves equipment, sometimes it involves therapy - but always, it involves reality. You can’t willpower yourself into being someone else.
Disabled kids tend to get taught the opposite message, because childhood therapy is usually cure-oriented even for conditions that aren’t anywhere close to curable. It’s about normalization, much more than functioning well.
Then they go through all manner of hell unlearning this once they’re old enough that everyone gives up on pretending that a cure is going to happen.
If you’re responsible to or for kids with disabilities, do what you can to protect them from this. Make sure they aren’t being pushed to hang their self-worth on accomplishing things that are physically impossible or implausible. Help them to understand hat their bodies aren’t wrong. Teach them that they already have lives worth living.