From my understanding, the windows tools were created to be installed after windows is installed, as it is not legal to distribute modified windows. The linux tools were not designed this way, they were designed to be built into the release.
HVM is just a virtualization mode, it does not change anything about the qube from a standard user’s point of view, other than allowing pci devices to be attached.
Unless you have a specific reason to need a linux distro that is not provided as a template, it is advised to use the template as they have qubes integration.
I am a little unclear on what exactly you are trying to do, and please correct me if I am wrong, but I think that you are trying to make a standalone hvm?
If that is the case, you just need to create a new qube, selecting standalone and choose the template to clone from.
I see your note on xfce4-screenshot frames not appearing, I am not sure what exactly you mean by that.
It is also possible to remove gui integration from a qube:
The stuff you saw about graphics and video editors almost certainly mentions hvm as a requirement for gpu passthrough, which is pretty much required for graphics heavy activities like video editing.