It is also worth mentioning that Proxmox uses ZFS making snapshotting quick and Proxmox also has a very good backup system.

If you want to treat your self-hosted applications as "sheep" (1) , then terraform k8s etc. is a better bet.

But if you are happy to manually restore from a backup or snapshot when something goes wrong, or automatically have your LXC container shifted to different hardware if you have a cluster, then Proxmox is for you. The reality is that in a home setup you will spend about as much or less time maintaining your "pets" than than you would your "farm".

(1) I write this from New Zealand