IMO safety trumps disability.
You can be accommodating as possible but sometimes places have to say no.
Im 17.5 stone, and too heavy to do skydiving. But I’m not going to kick up a fuss and then go splat into a puddle. If you’ve got no arms, you can’t race in F1 as you can’t get out the car if it catches on fire.
Similarly, if this person was having an episode or not able to control what they were doing (widespread generalisation) that put other players at risk - if that’s game rules like ignoring MEDs or more real life and getting physical with other players - then for the safety of other people then they should be banned.
Playing the disabled card could just be a dick mood. Same way Tyson Fury and Joe Marler always act like dicks then go “muh mental health”