The way this gets fixed in an org isn't by engineers winning fights with designers. It's by someone at a higher level deciding that they care about accessibili

The way this gets fixed in an org isn't by engineers winning fights with designers. It's by someone at a higher level deciding that they care about accessibility (or that they care about not getting sued), and introducing constraints which their designers and engineers must work within, and making compliance with the constraints part of the QA process.