Taking a quick overview. This is another Mass platform idea like Reddit, Scored.io, Discord etc…
One of the benefits is no self hosting and the fact of no need to sign up an account for different communities. As one signup generally gives potential access to them all. The other thing like the platforms mentioned you really don’t need to do much in the way of setup. Alot of folks don’t really want to sign up for all kinds of independent communities with a seperate electronic account even with account)PW managers
So on one side it is how we implement our hosted/self-hosted communities. With new plugins like Activity Pub we can interconnect different communities from my understanding.
With Discourse we need to focus on our designs and promoting our contents. However the rewards can be staggering with customization & control over your community & content.