No, Qubes really isn’t nested by default.
Nested virtualization means if a virtualizer runs inside a virtualizer.
Whonix being based on Kicksecure doesn’t imply nested virtualization.
Kicksecure being based on Debian doesn’t imply nested virtualization either.
Debian with Kicksecure “running on top” is just a way to say “Kicksecure software packages are installed on Debian”. Not about nested virtualization.
(a hypervisor is a VM, isn’t it?)
A hypervisor is a software that can run VMs.
A hypervisor is a virtualizer.
A hypervisor is not a VM itself.
sudo systemctl start tor.service
is not the same as
lxsudo anon-connection-wizard
or
sudo service networking restart
sudo service tor restart
is it?
But those are the commands to use for initiating the tor connection, right?
One part is commands. The other part is configuration files which I mentioned earlier in a reply to you here somewhere.