good point, that’s fair. The reason I think it bears mentioning is that editing configs under /etc/ is totally something we might expect a user to do. So you could follow a tutorial online that is wrong or outdated and with enough bad luck, tada, you bricked your “immutable” system. Or, less dramatic and more likely, something doesn’t work as intended anymore and you don’t know how to restore to the original config from when you installed.
You’re right that “immutable” is a bit of a misnomer in that regard, and it’s been argued that “atomic” is a more fitting term.
And I agree that a lot of documentation and how-to-guides don’t account for immutable setups (yet?), which can get novice users especially in a lot of trouble.
Personally, I prefer a declarative system (NixOS) that solves this problem rather cleanly and gives me most benefits of so-called immutable distros as well.
