Gentoo is my prefered distro.
Different domains. I got three domains to get running.
And honestly the documentation isn't helping.
There is also the fact that this isn't a platform as much as it's a framework that uses and open protocol. Right leaning people can setup Mastodon, Lemmy, Friendica, and so forth as easily as left wingers.
The biggest problem in general has been people treating Fediverse setups like traditional ones. Facebook, Twitter, Discord are all run by central companies.
Mastodon, Lemmy, Matrix, have the benifit of being usable as bases for people to setup individual communities for themselves and still have some networking.
While I wouldn't mind it if it's worth the time, I recently played around with Audacious with skins and found a skin that made it look exactly like winamp. I can't move jt around in KDE Plasma 5 in Wayland, but it does work well in Enlightenment 0.26 on X11.
It's not so much that it suggests it's supported, it's how the ansible install talks about setup.
Specifically this from Lemmy Ansible
This makes me think you can setup multiple domains in the host_vars directory