Total anecdata, but the usual amount of HN comments on how this and that "just works" in Arch, seems to have dropped recently. It's still #9 on Distrowatch (I'm pretty sure at one point it was in the top 5), so it's not disbanded or anything.

I could see how the core Arch users would despise systemd anyway. For all protestations to the contrary, Arch is pretty hardcore ("all upstream all the time! Configure everything yourself!"). Hardcore old-hat sysadmins are the ones most affected by systemd reinventing the init wheel.