You can. Most things have gui options.
But you quickly learn for somethings. The terminal is just easier.
If you ignore odd stuff. Most everyday stuff to maintain the system is available in a controlled panal like program. It varies based on distribution and windows manager. But the basic setup is there for most things.
Its when you want to do something creative it gets more complex. While most commands have gui apps. Most online guidance will just find the terminal an easy way to guide you.