I'm really surprised every time anyone complains that a web-application (not just a plain web site) doesn't work without JS.
I mean it's an application, applications contain code and tracking that code state server side can involve a non small amount of additional cost.
Sure they could have a web-side like non-logged in viewer mode and then somehow using hydration magic transition to being a app on demand, but that is a bunch of additional work (i.e. cost) for a very small number of people.
But here is a good thing, it's open source so you or any of the view people which care about no-js could try to contribute such a "view only web-site" functionality, or crate an alternative web client which solely uses server side rendering or similar.
But in the end that's not worth your time right (at least for me it wouldn't be if I where in your situation)? So why expect anyone who doesn't even get any benefits from it to invest that time?