It doesn't seem worth the effort unless you have some use case--a particular community you want to cater to, or an organization that wants to control identities

It doesn't seem worth the effort unless you have some use case--a particular community you want to cater to, or an organization that wants to control identities on a domain. As an individual, it seems a better choice to go with an established server, and kick in a few bucks on patreon or whatever as needed.