Thanks for the reply. I struggled with the title a bit, in my head I think of the "XYZ Fallacy" as a trap we are likely fall into. For me, the trap was overemphasizing a set of implicit rules and trying to explicitly teach those rules to newcomers. (I.e., the newbies are required to use a structured approach that proficient practitioners never needed or even know about.) This is my personal lingo though, and might not make sense to others.