[Arubis]

The whole thing was put together in a somewhat obscure dialect of Lisp over 15 years ago. There’s probably under 100 people that write Arc regularly enough to meaningfully contribute, so the general approach has been to not fix what’s not broken.

[ehsankia]

This is not a very complex website, any HN reader could probably whip up a replacement from scratch over a weekend.

I guess there does exist many alternative UIs, though I don't see many that support commenting. I wonder if the "API" (if there's any) allows for that, or if people are just scraping the page and reformating it.