PC breaks? House burns down? My data is encrypted in a datacenter. My account gets cancelled? My data is on my NAS.
I don't store much data on my PCs or devices at all. Any data that is there I treat as transient. The NAS acts as permanent storage. So if the devices die, I can quite literally restore them to the state they were in within hours of their death from the NAS. If my house is hit by a tornado and my NAS dies, my data is safely encrypted in an external location. I've lost nothing. If my NAS, devices, and Wasabi's data center are all hit by tornadoes at the same time we have bigger problems to worry about. If that ridiculous scenario happened your server would not be immune either.
I'm not seeing the advantage of your rented server vs having backups in the cloud. Is it because the server will keep running? But if you've lost your devices in a fire you still can't access it whether it's running or not. When you replace your device you can then connect to your server, but I can simply download my data again. HyperBackup Explorer is available for every platform and can do a full restore back to a NAS, or individual file downloads for anything else.