The hindsight-prescriptive comments here focus on backing up, and that's a sensible practice. But there was another kind of damage done here, to the man's identity, location and voice. His blog and his email address were his public persona. He used his blog and his address as identity, and as his channel of communication with followers, other artists, and I assume most of his general online communication. That person…
Why not just get a stable, world-reachable[1] IP address? All the services you use have them. You can too. When you have your own, then you can run your own "services", not to mention many other possibilities, such as true decentralized communications -- no third party servers needed. 1. "World-reachable" means you control the firewall, not a third party. Alternatively, be satisfied and keep depending on third partie…
Having a custom domain would get your far enough in this case, owning your own IP address isn't really needed.