When comparing Chromium OS vs Artix Linux, the Slant community recommends Artix Linux for most people. In the question“What are the best Linux distros that don't use systemd?” Artix Linux is ranked 12th while Chromium OS is ranked 30th.
Ranked in these QuestionsQuestion Ranking
Pro Minimalistic interface
Chromium's system UI uses as little screen space as possible by combining apps and standard web pages into a minimal tab strip: While existing operating systems have web tabs and native applications in two separate strips, Chromium OS combines these, giving access to everything from one strip. The tab is the equivalent of a desktop application's title bar; the frame containing the tabs is a simple mechanism for managing sets of those applications and pages.
Because Chromium OS is designed for users who spend most of their computer time on the Web, it is intended for use in computers with little local storage and fast boot-up times.
Pro Safe and requires little to no maintenant
Since you only have the browser, you cannot install applications (outside Chrome Apps which are decently protected by their limited API and the Chrome Web Store). This means no harmful virus, and also nearly no way you can screw your system. Everything will just work.
Pro No systemd
Pro Close to bare Arch Linux
No learning curve if you're coming from Arch or any of its derivatives
Pro Rolling distro
Only the software you would need like Terminal emulator, file manager, media player and a browser.
You can have a functional system in less than 10 mins using GUI installer OR you can do it "the Arch way"
Artix actively supports the runit init system known from Void Linux. (Equally besides the OpenRC init system known from Gentoo.)
Possibly harms your privacy.
Con No auto-upgrade (unlike Chrome OS)
Chrome OS auto-upgrade the system, but Chromium OS does not. It's possible that they're thinking about adding that feature from the design doc.
Con Few Arch packages might not be available yet
Developers are working migrating all packages into their own repositories while ensuring there's no systemd malware.