I think it is still in sort of a testing/early access phase. Discord only access is essentially a way of funneling everybody who wants to try it into their captured marketing venue without having to have one of those "give us your email" placeholder pages (also has a bonus "social" aspect where you're seeing what many of the other people who are using it are creating). The final product will presumably be more tailored and web-driven.

It's also an interesting way of balancing what I assume are high operational costs on the server-end by pawning off some of the hosting of assets onto Discord.