Distro best added to the “Power-user distros to avoid” list: Gentoo (saying that as a Gentoo user).
I disagree with your claim that doing things like installation steps manually is necessarily a bad idea, though. It depends on your goal. Obviously it isn’t the fastest way to get things up and running, and as such it isn’t appropriate for newcomers (or for mass corporate deployments). If your goal is to learn about the lower levels of the system, or to produce something highly customized, then it becomes appropriate. Occasionally, it pays dividends in the form of being able to quickly fix a system that’s been broken by automation that didn’t quite work as expected. Anyway, I’d suggest rewording that bit of your Arch screed.