RulePlot[WolframModel[ ]] wrong rule representation

Is the lefthandside of the rule in the plot correct?

RulePlot[ResourceFunction["WolframModel"][{{x, y}, {y, z}} -> {{x, y}, {y, x}, {w, x}, {w,z}}],VertexLabels -> Automatic, "RulePartsAspectRatio" -> 0.5] 

I would expect:

Aantekening2020-07-10170022.png