Thank you for trying this.
As a personal who has had real (but, it has turned out, temporary) disabilities, you’ve captured some of the frustrations accurately. One of my experiences when I could only walk for short distances with a walking stick and was in constant pain: I was given an award (lovely) at an otherwise accessible conference that I managed by renting a powered scooter chair to get around (expensive). To get the award I had to struggle painfully up some steps into the stage.
I’d encourage everyone to try a few temporary disabilities.
What you can’t easily replicate is the experience of that disability being relentless and maybe never ending. I didn’t know that my hip replacement would work and I can clearly recall watching someone effortlessly get up out of a chair to walk across the room and wondering what that felt like (I’d forgotten) and whether I’d ever again have that blissful luxury. I can also clearly recall the “spoons” – I’d only got so many spoons of activity available to me each day and I had to plan carefully how and when to use them. And the speed bumps! Every single one was agony.
Like I said, I was extremely lucky and my hip transplant worked perfectly. So I’m not claiming in any way that I truly understand a relapsing/remitting, or lifelong, or deteriorating disability.
Mostly I think is is a very big “plus one” for your point about listening to what people with disabilities tell us and believing them.