Disabled or not, people are people.
I was recently accused of being ableist by someone in a wheelchair who was being v. aggressive when I suggested she would get further if she dialled down the hostility a bit.
I have no doubt being in a chair is hugely frustrating at times. There is still no need to go around primed to be angry.
I cracked up and told her that judging by appearances has pitfalls and dug out my cane for her perusal.
The conversation dried up at that point.