Comment by ilikehurdles

Honestly, no, not everyone knows this. Maybe when there was just arch linux and no spinoffs; but manjaro provides an easy path to a rolling-release arch(-like) distribution, and it treats AUR as a first-class citizen in its GUIs. I think there was a popup at some point when an application first accesses AUR that tells you that AUR is unsupported and to go to a wiki to understand it, but I think it could use better messaging. A warning at the header of the AUR section of the package manager gui would be a good start.