The great strength of Omarchy is the fact that they've repackaged every good things from many different projects (arch, hyperland, and many packages) so I can install a fully functional distro with nice defaults, and every hardware working (bluetooth etc...), in less than 3 minutes without any interaction whatsoever. And it just works. Not because of Omarchy per se, but because they scripted the hell out of it so it just works™.
What exactly in the UNIX philosophy says configs should be editable via text files? It specifically talks about CLI tools using plaintext for their I/O to allow piping commands - not about configuration.
It's called the "Rule of Textuality", a component of which is: "Store data in flat text files." This principle recognizes that text files are human-readable, easily editable with any text editor, version-controllable, and can be processed by standard UNIX tools.
Right now, snap (2016-present). Before that, Unity instead of GNOME (2011-2017), Mir instead of Wayland (2006-2015), Upstart instead of systemd (2013-2017).
They always do something custom-made and not adopted by anyone else, only to completely backpedal and go with what everyone else has already been doing. So, even if you like their custom-made solution you'll eventually end up being disappointed. After that, it becomes like a relic that only some frustrated sysadmins like me will have to deal with whenever we interact with some legacy systems, which definitely doesn't help with Ubuntu's overall reputation.
It's not hard, but it's advisable to eventually set up a parallel blank Arch install where you configure everything from scratch based on things you liked from Omarchy.
I think the beauty of this is to get to understand all components in your system, which is quite simple actually.
It's not magic, but damn it's nice.