The installation is certainly very complicated.
What do you mean? On Windows it's just an installer and on Linux it's usually part of the package system.
The installation of QEmu is certainly a snap but, and he probably means this, the setup of a virtual machine can be rather daunting at first, what with all those options which one is never quite sure what will they do.
Fortunately, there are quite a lot of GUI "launchers" that allow you to define a machine almost as easily as one does with, say, VirtualBox. Google for "qemu launcher" or "qemu gui" and you'll find tons of them.