I think you're underestimating the capabilities assistive technologies have for dealing with dynamic UX. Apps can be accessible. Video games can be accessible.

I think you're underestimating the capabilities assistive technologies have for dealing with dynamic UX. Apps can be accessible. Video games can be accessible. The claim that any experience delivered in a web browser should, to enhance accessibility, remove and simplify interactivity down to just hyperlinks and forms, rather than support assistive technology in the use of more advanced interactions, seems completely defeatist.