>>105667751That's not the same as Qubes, he seems to have a dunning-kruger impression of Qubes from using it for a few minutes, I guess it's impressive in its own right and is fine if all you want is to just run applications isolated from each other. But then there's no reason you should be interested in Qubes in the first place if all you want to do is run multiple VMs for desktop use.
First of all you can't magically turn debian into a type 1 hypervsior. There's no way he is hiding hardware from the system, even if he somehow re-created some kind of admin VM similar to dom0 in Xen, which wouldn't make any sense since proxmox needs access to the hardware. That is one of the appeals of using Xen in the first place, the reason dom0 is allowed to run such an outdated version of fedora is because dom0 in Qubes doesn't even know the network card exists. If you ignore that problem, to actually re-implement Qubes he would need to rewrite all of the rest of the Qubes tooling like qubes-mgmt-salt, all the messaging systems (for guests and for dom) for allowing updates to be loaded into VMs that don't have access to the internet.