I have JavaScript switched off on my phone (intentionally) and have just opened the forum. I expected an empty page as so many JS-driven websites nowadays don't care about the non-JS experience. But Flarum gives you at least a very basic experience. You can only read and not interact with anything (apart from following links). The home page shows a list of links ordered by latest posts and no filtering, search or login.
It could be better but is better than nothing. So, I'll give that half a thumbs up.
The only thing that is really missing (especially for a forum this big) is a search functionality. Could a search box without JS post to Google with site
set to the forum? The search box in the big meta bar across all DokuWiki tools isn't working without JS either. 🙁