No, I share your sentiment and I work in the accessibility space myself. Presentation should always follow the content, presentation is always secondary and it

No, I share your sentiment and I work in the accessibility space myself. Presentation should always follow the content, presentation is always secondary and it needs to be flexible. In cases of (color)blindness, vision loss or cataract, deafness, vertigo etc. the presentation needs to adapt to the user needs while ideally presenting the same content. With OP's stylesheet it is possible to create a visual representation that is flexible and robust, but the classlessness nature makes it impossible to support certain type of content altogether.