Is the dead man's switch necessary? Unless your homelab contains secrets you don't want revealed until after your death, I'd just put this in a Google doc.
Depends how convoluted your setup is. For some use cases releasing the location of passwords physically written down might help matters or maybe trigger a process to export all data and upload somewhere - somehow.
Seeing some of the discussions around home labs with server racks and k8s doesn’t fill me with confidence that for a majority of use cases a family member would be able to get the data if needed.
