If Trump doesn't blow us up, global warming doesn't kill us, and all space objects and energies can be avoided, companies may still be running software from 2005 in A.D. 3400 when the UUIDs will begin rolling and all hell will break loose. It'll be Y2K all over again. And we all know what a close call that was.
Mastodon is a federated social network composed of instances. This particular instance is a portal into that social network, and a support group for workers of all types.