I do not prefer apt-based systems, but I've installed variations of Ubuntu (e.g. Mint) on systems for geriatric (grand)parents in the past 5 years and have not yet needed to drop into shell to fix something.
If the needs are basic (browsing, email, printing, documents), Linux hasn't needed wizardry for years. This is mostly thanks to Gnome and KDE's hard work on GUI admin tools, but if someone is going directly from Windows to i3, they've chosen a steep hill to climb.