Yeah, I’m not defending Manjaro, they are too sloppy for me to do that. Rather EndeavourOS and CachyOS and similar which either give you a working Arch install with minimal effort or add something that may be of value to Arch. That said, the Manjaro distro itself is pretty good, especially if you swap the unstable repos which mirror the Arch ones. Kind of defeats the point of Manjaro though.

Because you can setup Vanilla Arch to be exactly like that derivative

There’s the difference, you don’t have to set the derivative up.

I generally prefer GUIs, but sometimes the terminal is just easier!