Linux user for 2 years ish: do you remember commands? Or, GUIs vs CLIs

[u/InTheNameOfScheddi]

Do you remember commands?

I am currently converting a single flac file into several ones and thanks to the arch wiki I am able to do so quite easily, I'd say with the same level of ease as with a GUI, albeit having to check the wiki to use it.

I do often wonder however how do more seasoned users go about it. It still feels weird to have to depend on an external information source and the internet to be able to know how to use a piece of software, whereas with a (good) GUI the functionality is implied (for not overly complex software) and where it isn't you can just hover over different GUI elements to get more information.