What actions are you doing that require a terminal?
making two displays work properly with correct aspect ratio and refresh rate
buggy UI components that needed restart from terminal
Many features aren't fully accessible from the UI AFAIK
I actually tend to interact with Linux machine mostly via terminal because UI is so unreliable from my experience
If there's one thing that Linux does very poorly IMO, it is GUI (technically desktop environments but you get the point)
> making two displays work properly with correct aspect ratio and refresh rate
What was missing from the Gnome display settings? I have all those options.
What actions are you doing that require a terminal?