Eric does an excellent job outlining the kinds of accessibility issues design systems and automated tooling can reduce, but never fully eliminate.

This is the part too many teams miss: accessibility doesn’t end at the component boundary. A well-built component library can give you a stronger foundation, but it can’t guarantee the right labels, the right heading structure, the right focus management, or the right overall experience once those pieces are assembled into an interface. That work still requires judgment, care, and testing with actual people.