For my home archive NAS boxes, Proxmox is just a Debian distro with selective (mostly virtualization) things more up to date, and has ZFS and a web UI out of the box.

I disable the high availability stuff I don’t use that otherwise just grinds away at disks because of all the syncing it does.

It has quirks to work through, but at this point for me dealing with it is fairly simple, repeatable and most importantly, low effort/mental overhead enough for my few machines without having to go full orchestration, or worse, NixOS.