Told my psychiatrist today

[BlueKota]

6. From what I've read, you can try to claim Irish Citizenship

if your parents, or grandparents were born in Ireland. Also if your great grandparents lived in Ireland, and were still in Ireland when your mother or father were born, there is still a chance they will grant it. It didn’t say anything about age or abilities using the family angle.

If there is no family ties fitting the requirements or no family ties to Ireland whatsoever, I doubt older disabled people would be granted citizenship unless their income is high enough to be self sustaining. Mine definitely isn't.