That is extremely difficult to provide a blanket term for - we're talking about such a wide spectrum of issues when we use the 90's definition of disabled. That would include people who are perfectly neurotypical but require physical assistance (i.e. someone with arthritis who needs ramps to change elevation at a reasonable speed), people who are neurodivergent but perfectly physically able and everyone inbetween. A lot of those folks just went unserved in the old system and struggled financially to keep themselves alive and fed while walking a much harder road than the rest of us.

I think a blanket term for disability isn't useful and it's much more productive to focus on forms of impairment - there's no real similarity in treatment and support between a person who was hit by a car and needs a wheelchair and someone otherwise normal looking who is prone to sudden violent outbursts due to a neurological disorder. And, unfortunately, one of those people is much more likely to be looked on with sympathy and the other shamed and feared - but both of them can live normal lives with proper care.