The issue is mostly the type of disability. You have to realize mental disability is not visible unless you know what to look for and even then you're dealing with some strange and often self-hated traits. So while physical disability is accounted for, mental illness and especially mental trauma (abandonment issues, PTSD in my case) are simply not even recognized as existing.
In most solarpunk I've seen, the issue of permanent differences in how a person functions is simply never addressed, and it feels like a gentrification of the problem. "Maybe we should push the mentally-handicapped somewhere else!"
It hurts even more when you get the handicap after you're born. Most mental issues are genetic and so they have no reference point. I didn't ask to be fucking beaten by a foster father who smoked in the house and refused to be questioned. I didn't ask or deserve to be stolen from my family by corrupt government officials. I didn't ask to be beaten by a bully so hard that he went to juvie for it and I was bedridden for a month. If you want to improve life, do it for people who have less than you without lowering anyone's standard of living. Otherwise you're asking for a world I cannot live in because I am a permanently-scarred psyche and I cannot support myself nor function in a community.
Don't get me wrong, inclusivity is bullshit. I only ask for a future I can rely on machines in, not one in which I would be doomed to die. I can see how being exposed to solarpunk via people first might make that something you didn't expect at least.