It doesn't.
It's just that the terminal is the fastest and easiest way to do it. It is efficient.
But you can use many available package managers to install or remove software.
For a GUI application, I prefer Synaptic Package Manager. It is full featured.
Software does have some problems. I think many will agree with you on this. Personally, I never use it.
But from the ZorinGroups perspective, it most resembles the Windows Store. So for familiarity, it generally works. In my opinion, I see the gnome-software Software Store as a stepping stone that a user can use to work their way up to a more advanced package manager like Synaptic.
I could as easily ask why there is any aversion to the Terminal.
I am not being snide, it is a very genuine bafflement.
The terminal is very easy to learn, very powerful and the most utilitarian tool on any Operating system.
That being said; the terminal is not required to use Linux. A large number of people use Linux, every day, without ever using the terminal.
But when you visit the forums, seeking help, for us the terminal is, BY FAR the easiest way to guide any user through problems. We can submit a post with three lines of tips or instructions, or request necessary information very efficiently and quickly.
But with guiding through a GUI; it gets very complicated. We must provide step-by-step guides navigating not just through the hoops of where things are in a GUI, but what it looks like even, with verbal descriptions. It can get very lengthy and tedious.
I am a firm believer that the average perception of "dumb" does not actually exist. But rather, that a lack of confidence is the concern. If a person is uncertain of what to do, if they lack confidence, others think they cannot do it. They think they must "dumb" it down.
I encourage using the terminal because it boosts confidence. When people feel more confident, they feel more capable. They feel more empowered. And this is one of the defining differences between Linux and Windows.
Please try the different options in Nitrogen - It can and does span the wallpaper on My machine with a 2880x900 wallpaper.
It can also place different wallpapers on each monitor by placing the Nitrogen window on the Monitor screen in question. I believe Automatic or scaled should do it.




