Well, there are distros in the list that are optimized for containers.
If you use Linux distros in Qubes OS, then I would say that it counts as a Linux distro (by default you get Fedora).
And by default you run in VMs, where some parts are persistent (e.g. your home) and some are not. Just like running a container with some persistent storage.
It depends on your use-case whether you like it or not, but I would definitely put Qubes OS in the list.
If you use Linux distros in Qubes OS, then I would say that it counts as a Linux distro (by default you get Fedora).
And by default you run in VMs, where some parts are persistent (e.g. your home) and some are not. Just like running a container with some persistent storage.
It depends on your use-case whether you like it or not, but I would definitely put Qubes OS in the list.