All features work without JavaScript I'm not sure why this is a selling point. Yes, there are many upsides to this, particularly from the maintainer's standpoint, but I think it might just be a side-benefit that only certain users really care about. Eventually, there might be advantages to removing that "feature", and you might turn off users who joined largely because of it.
Maybe one day it will have a tiny amount of JS, but let's cross that bridge when it comes. That's still better than the vast majority of modern websites built today.