I am not theorizing. And I am not taking about source code not compiling. I am talking about dependencies which includes the reports version numbers and version number expectations of packages maintained by different parties. Those broke all the time for me on Manjaro and it was often because of the differences between what was in the Arch repos vs the Manjaro repos.

When Manjaro fell behind at one point, I ended up with a version of GEGL ( labeled - git ) being pulled from the AUR. Later releases of GIMP refused to upgrade over that version of GEGL. I just lived with it for a few months hoping it would clear itself up but it never did. I basically had to back everything my out and install again. Not that it was hard but these kinds of annoyances happened for me all the time on Mnajaro and basically never on EbdeavourOS or Arch.

What made me move away from Manjaro to begin with were all the problems it had with the dotnet packages at the time. I blamed dotnet and the AUR and was amazed that the problems went away when I used EndeavourOS instead.