It would be horrible to know that somebody you've seen now and then no matter on a forum or not just up and die.
He's only twenty nine, though. It would be out of the ordinary for somebody to die naturally. And I'm pretty sure Blockland won't be around for at least sixty seven years.
I guess it would be saddening, but you can't be entirely sad over the death of somebody you don't know.
And anyways, I'm pretty sure Ephialtes would find a way to keep running the server.