Something that goes without comment by the uncritical author is Illich's vile comment that medical science and its quest to extend life at all costs "extends the suffering of cripples". In other words, he doesn't see the life of disabled people as having value.
Speaking as someone who has teetered on the edge of disability most of my life, so does essentially everyone else. We tie health insurance/access to healthcare to your employer for a few reasons, but I think fundamentally it's because we believe that those who cannot work are undeserving.
but about cannot work -> undeserving, I think it's mostly idle -> undeserving. Americans are terribly worried about idleness.