That is true, but that discussion is a whole different can of worms 
That is true but a CLI is much more unintuitive than a GUI. Without this tutorial that you just posted above, I wouldn't have been able to operate this tool on my own. But if it was a GUI app, I definitely would've been able to figure the application out on my own.
I like having access to the CLI and being able to use it but I absolutely hate the idea of having it as the only option. It is outdated and borderline obsolete.
While I see your standpoint, I disagree with the idea that CLI goes far beyond what most GUI apps can offer. While that statement is objectively true in a lot of cases... I don't see it as something good. To me, it says that the design of that GUI is SO bad that people rather use the CLI. It Sounds like an insult to me
Sadly the GUI design of MANY apps and even platforms are still totally outdated, obsolete, and as you mentioned, limiting.
It's a weird problem that I noticed instead of getting tackled and is often fought against. Instead of users uniting and pushing for a new and better GUI for everyone's benefit, people just want to stick the old and unintuitive CLI and sadly many Linux veterans declare it as the holy answer to everything.
To make an analogy, opening a CLI in Linux is like opening up the maintenance shaft in a house. I just want to install a new fridge in my house, I don't want to go into the maintenance shaft every time I want to add something new to my house and deal with the darkness and dirtiness of it. But I'd love to have the option to open the maintenance shaft when I want to.