In Proxmox, LXCs allow you to easily share resources between containers like your iGPU can be shared with your Jellyfin container and a separate Immich container. From my understanding, VMs bind whatever resource to the VM which can’t easily be used with other VMs or containers.

Duct tape is probably not always readily available mid-flight.

Try the users suggestion from the other post and run “ls -an” to see the numeric user IDs rather than the names you’re assigning. I’ve recently been building a new server with proxmox and learned this same lesson already as user “1000” gets assigned as user “100000” inside containers there to prevent it from having host permissions automatically from my understanding.