After some years, rescuers arrived at the deserted island to find the man had set up farms, shelter, and modern amenities. He had even cobbled together a server out of fragments of wreckage and was self-hosting two single-user fediverse instances on VMs running Alpine Linux.

"But what is the second one for?" the rescuers asked. "Are you running glitch-soc, or trying out Calckey, or what?"

"Oh," said the man proudly, "that is the instance I refuse to federate with."