I have used plain Arch in the past, for several years, no derivatives.
At that time there existed an AUR-helper called Yaourt, which I made heavy use of. But often in haste, sloppy. Which lead to many unnecessary clean-up actions, but no loss of system. Meanwhile I had to use other stuff, so no Arch for a while. When the need for using other stuff was gone I considered several options, like Gentoo, but naa, I don't wanna compile anymore!1!! (Yes, Yes, I know they serve binpkgs now, but would they have my preferred USE-flags?) Maybe Debian, which can be fucking fast when run in RAM like Antix, but I had that for a while, and while it's usable, Debian as such is bizarre.
Anything Redhat? No thanks. SuSe? Same. So I came across CachyOS, and continued to use that, from the first "test-installation" running to this day, because it works for me, like I wrote before. Like a dream come true.
Remembering my experiences with Yaourt I abstained from using the AUR. And that worked very well for me, so far. Also the Gentoo-like 'ricing' comes for free with their heavily optimized binary packages, without compromising stability.
> I guess I'm asking, have you installed the vanilla distro? Are you familiar with things like systemd-boot, partitioning, arch-chroot, mkinitcpio, and all that?
Yes.
Are we clear now?
Edit: I'm so overconfident I'm even considering disabling the pacman-hooks into BTRFS-snapshots, because I never needed them.
No rollback necessary, ever, so far. Same goes for pacman cache.
After every -Syu follows an immediate -Scc.
Because the only way is forwaaaaard ;-)