I think Arch is so popular because its considered a middle of the road distro. Even if not exactly true, Ubuntu is seen as more of a pre-packaged distro. Arch would be more al a carte with what you are actually running. I started with Slackware back in the day when everything was a lot more complicated to get setup, and there was even then this notation that ease of access and customization were separate and you can’t have both. Either the OS controls everything and its easy or you control everything and its hard. To some extent that’s always going to be true, but there’s no reason you can’t or shouldn’t try to strike a balance between the two. I think Arch fits nicely into that space.

I also wouldn’t use the term “cultists” as much as “aholes”. If you’ve ever been on the Arch forums you know what I’m talking about. There is a certain kind of dickish behavior that occurs there, but it somewhat is understandable. A lot of problems are vaguely posted (several times over) with no backing logs or info to determine anything. Just “Something just happened. Tell me how to fix it?”. And on top of that, those asking for help refuse to read the wiki or participate in the problem solving. They just want an online PC repair shop basically.