Am I wrong in my conclusion that anarchy mostly boils downs to ableism? The argument seems to be that organised society shouldn't exist because I don't need help with daily life.

Maybe with a sling of people have always taken care of people with disabilities. Completely ignoring that a disability a thousand year ago was a broken leg, or a funny nose. Today we have people that can't breath without machines. Without functioning immune systems. Dependent on medications with short shelf life