You nearly had it. The black line starts higher at "gaining skill" so it requires more skill to start learning but after short time you are gaining much more skill in the same time.
Was thinking same. I always think windows is the easiest to get used from beginning, but that could be cause windows was the first operating system i was dealing with. Playing with the amiga 3000 could be the start, but there i was only 5
Btw, I don't use Arch
NixOS is my new daily driver after a hard start and many copy+pasta from Github Repos ^^