I honestly don't care if $85k is the cutoff. I don't care if there is a cutoff at all (but I recognize some people don't like the idea that if a millionaire becomes disabled he'd be eligible for some amount of money from the government). If someone becomes disabled or whatever, and they have money saved from working, why would they not get benefits? Why do they have to deplete their savings first to get shitty benefits? Social security doesn't have an income or asset cutoff; why does disability?
I actually personally agree with the sister post of just...paying people based on their disability, without caring about how much other income they're able to generate, or assets they collect. But I recognize how politically untenable that is.