This is not only about people who disable js, but also about people with disabilities who would benefit from accessibility features on your app. With this argue

This is not only about people who disable js, but also about people with disabilities who would benefit from accessibility features on your app. With this arguement, we should also ignore them, since they might not be the ones making the most traffic i.e. revenue for us. There is also the increasing number of users who disable trackes out of privacy concerns. At lease most of the marketing guys I've seen still assume what trackers show is all there is.