Re-read my post, and tell me where did I said Arch is complicated? My view is summarized in the last paragraph, and I can summarize it even more here "good, but not beginner friendly". Arch expects you to know how to deal with it, it expects you to read the news, it expects you know how to downgrade a package and it expects you're comfortable in a terminal. A newcomer is unlikely to even know about any of that, they already have to learn a lot of other things like package manager, learning what's the name of each program and how they behave slightly different from what they're used to, etc, they don't need to learn about pacnew/pacsave files on top of all of that. If you're already comfortable in Linux, yeah, Arch is amazing, but if you're presented with a terminal not even knowing what KDE/Gnome are you're going to have a bad time.
And that's the thing, it's not that it's complicated, but it's the unknowns unknowns that will get a new user, they don't know they need a session manager, they don't know they need a printer daemon, etc. And if you bypass that by using Manjaro/Cachy, you're now in a position of using a distro that expects you to know about that but didn't taught you about them.