They do bill themselves as terminal centric but honestly I do not get that.
The whole point of the distro relative to Arch is the graphical installer. It sets you up into a nicely configured desktop by default. There are graphical tools for configuring most things.
I think the main reason they say that is that there is no graphical package manager by default. So, even to install one, you need to use the command line at least once. They pre-install yay though so yay -S pamac-gtk or yay -S octopi will solve that problem ( I do not like pamac myself though ).
It is basically just Arch once installed though so I guess it has fewer tools built in than many distros.
Anyway, I don’t own EndeavourOS stock. No big deal if you prefer something else.