Personally, I believe that Discourse has a lot of improvements that other software should take into consideration. However, I prefer XenForo, as things currently are. That may change, as Discourse improves as well.
I don’t like Xeonoforo’s layout or really anything about it. Because of it, minecraft forum is on my list of ‘web monopolies’, right up there with youtube. Maybe it’s just me but I think reloading the whole page to do anything is very annoying.
The point is that BukkitDev, CurseForge, the Minecraft Forums, and the Minecraft Wiki are all hosted by Curse. That’s two off your list (arguably the most popular for hosting mods). Now what does that sound like?
I don’t know anything about the software and stuff that Curse uses but I think it feels really old school.
This forum just looks fresh and easy to use, I like that!