Alt-media is better than mainstream social media, but it still has the problem of centralization. The "fediverse" refers to all
federated (read,
[free]) services and protocols, from video sharing with Peertube to "FOSS
[Discord]", the Matrix Protocol.
It is infested with
lefties, which is ironic for a group that would shut down all federated services by force in their own
society for enabling "fascism". However, since these services are truly
free and federated, you can always start your own instance comprised entirely of your own friends or those approved by yourself.
The Fediverse, just
like everything else in existence, is under attack by
politicians (read,
subhumans,
criminals) via threats to
e2ee and
p2p protocols, which are the very foundations of some of these services.
The Fediverse is what the Web should be.
More people should use Federated services
If you truly
believe you are the sole owner of your
data, you
will use fediverse services.