I know he’s one of the tailwind guys. That’s why I’m pointing out the inconsistency of a video stating semantic class names are needed for consistency, while having a website that strongly suggests otherwise.
Not really sure what you are referring to, they always seemed to be open ended, and their docs https://tailwindcss.com/docs/customizing-colors#naming-your-... seem to represent this. The main point is you need to customize your design system and tailwind provides a toolbox for doing that.