I do not understand this. Why use a three-node Proxmox cluster to self-host services that would (generously) need one N100 (with straightforward LiIon battery b

I do not understand this. Why use a three-node Proxmox cluster to self-host services that would (generously) need one N100 (with straightforward LiIon battery backup)? Why all this complexity for a relatively barebone setup? They aren’t even self-hosting their own files, relying on Wasabi instead, and I do not understand why. Surely there is an HDD somewhere between those three nodes in the Proxmox cluster?