Yes there's a learning curve but once you've learned that it can be more efficient. For some people key bindings are easy to remember. For others a menu is better even though it's slower to navigate.

But clearly it isn't for you. It isn't for me either, though I did try. I just don't really have a reproducible workflow (I'm not a dev). In that case the setup overhead does indeed not pay off. If you spend every day in an IDE I could definitely see it working out.

Even on my work mac I often prefer using the cli for things that others would do in the GUI. They find that archaic and overly complex. I find it simple and faster. Opinions vary :)