Username or EmailPassword
Grub config is almost always handled automatically in Debian. There's regular grub configuration [which is dynamically generated everytime there's a change in kernel number, etc], and there's /etc/default/grub file which contains custom option that user wants to automatically add to default grub configs everytime they're being generated. That solves the problem. Occasionaly you'll get a merge window [diff], and that's what I call reasonable config file management.
I just think Arch's way of handling config files is kinda ... irritating at least to me. Some things should be automated. There are more important things that needs our attention.