For reference, tooling to directly import such exported OCI image as LXCs is being worked on: https://lore.proxmox.com/pve-devel/20250709123435.64796-1-f.schauer@proxmox.com/
I think that what @dhalsher is attempting to do is indeed valid.
I was personally interested in doing the same thing and would have liked it if people addressed what I was inquiring about.
Below is one way I discovered to do what @dhalsher...
Like.
For reference, tooling to directly import such exported OCI image as LXCs is being worked on: https://lore.proxmox.com/pve-devel/20250709123435.64796-1-f.schauer@proxmox.com/