Your package manager commands and options and some basic tools to troubleshoot local networking are really not that fucking hard.
Who are you trying to fool, yourself or others? Setting up networking in the CLI isn't even remotely as simple / straightforward as you make it seem for the common user. Package manager commands are reasonable, however also by far less enticing to most people than a graphical software manager that shows all information at a glance. Especially if you look for something for a certain purpose instead of a specific name.
Well, I'm arguing for the common non-IT people. It's also more often than not less about complexity, but intuitiveness paired with a lack of knowledge (which is okay, as long as it's well designed it's okay not to know how a clutch actually works but still wanting or needing to drive a car).
For power users the whole discussion obviously shifts as it's reasonable to expect them having both the interest and time to learn stuff.